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What is a hollow cum-thru urethral insert? Hollow urethral inserts (also called cum-thru plugs or penis plugs) feature an open channel that allows urination and ejaculation while worn. Unlike solid urethral sounds designed for temporary insertion, hollow inserts can be worn during sex for unique internal stimulation throughout arousal and climax. The ball stopper prevents full insertion while adorning the glans visually. In our experience curating urethral jewelry and wearable sounds, the hollow design transforms urethral play from session-based exploration into extended wear pleasure — you can keep it in during masturbation, partnered sex, or daily activities.
Folks, meet the Chasm — a hollow stainless steel urethral insert designed for wearable pleasure during sex and climax. The ultra-thin 0.10-inch diameter (approximately 2.5mm) makes this an ideal beginner urethral sound, while the 2-inch insertable length provides comfortable internal stimulation without overwhelming depth. The gradual taper widens slightly as it enters, creating gentle stretch sensation. Most importantly, the hollow cum-thru design allows natural urination and ejaculation while worn — no need to remove before orgasm. The decorative ball stopper prevents full insertion and adorns your glans sensually. At 0.14 lbs, this lightweight penis plug provides discreet all-day wear or intense sexual enhancement.
Best for: Beginners exploring urethral play with ultra-thin sizing, those seeking wearable stimulation during sex, anyone curious about cum-thru hollow design for hands-free pleasure. The 0.10-inch diameter is the thinnest urethral sound size available — perfect for first-time sounding. We've found that hollow inserts create uniquely intense orgasms as ejaculation travels through the internal channel. Hypoallergenic stainless steel cleans easily with soap and water. Requires sterile water-based lube for insertion. Ships from sunny California with discreet packaging, privacy-safe billing, and free mystery goodies.
| Hollow cum-thru design | Open channel allows ejaculation and urination while worn — no removal needed. |
| Ultra-thin 0.10 inch diameter | Beginner-friendly sizing (approximately 2.5mm) — thinnest urethral sound available. |
| Decorative ball stopper | Prevents full insertion while adorning the glans with sensual jewelry aesthetic. |
| 2 inch insertable length | Comfortable depth for extended wear without overwhelming beginners. |
| Gradual taper design | Gentle widening creates progressive stretch sensation during insertion. |
| Premium stainless steel | Hypoallergenic, non-porous metal allows thorough sanitization and body-safe wear. |
| Wearable during sex | Keep inserted during masturbation, partnered play, or penetration for added stimulation. |
| Lightweight 0.14 lbs | Discreet weight allows comfortable all-day wear if desired. |
| Discreet shipping | Plain packaging, no product names or logos. |
Hygiene is essential for pleasurable, safe urethral play. Clean the stainless steel insert thoroughly with antibacterial soap and hot water before first use. For deeper sanitization, boil for 10 minutes (stainless steel is fully sterilizable). Let cool completely before insertion. Apply generous sterile water-based lubricant to the tapered shaft and your urethral opening. In our experience with hollow urethral inserts, the ultra-thin 0.10-inch diameter makes this exceptionally easy to insert for beginners — it's the smallest urethral sound size available.
Insert slowly and gently, letting the gradual taper guide the way. You'll feel gentle stretch as the shaft widens slightly. The 2-inch insertable length provides comfortable stimulation without overwhelming depth — most folks easily accommodate the full length on first attempt due to the thin diameter. The decorative ball stopper will rest against your urethral opening when fully inserted, preventing the plug from sliding deeper and creating a sensual jewelry aesthetic on your glans.
The hollow cum-thru design is what makes this unique: you can wear it during masturbation, partnered sex, or even daily activities without removal. When you urinate or ejaculate, the fluid travels through the internal channel naturally. Customer feedback consistently shows that ejaculating with the insert in place creates intensely heightened orgasms — the sensation of cum traveling through the internal channel adds unique stimulation. Some folks wear it for hours during arousal buildup, while others insert it specifically for sexual encounters. The lightweight 0.14 lbs makes extended wear comfortable.
The Chasm delivers wearable urethral stimulation that traditional sounding rods can't provide. That hollow cum-thru design means you can keep it inserted during sex, masturbation, or arousal buildup without interruption. When you ejaculate, the sensation of cum traveling through the internal channel creates uniquely intense orgasms — it's internal stimulation combined with natural function rather than obstruction. The decorative ball stopper transforms this from purely functional to aesthetically sensual, adorning your glans with jewelry-like appeal.
The ultra-thin 0.10-inch diameter (approximately 2.5mm) makes this the best urethral sound for beginners. In our years curating urethral toys, we've found that many first-timers feel intimidated by thicker sounds — this ultra-slim sizing removes that barrier completely. The gradual taper provides gentle progressive stretch without overwhelming sensation. Premium stainless steel construction ensures body-safe wear and allows complete sterilization through boiling, giving you confidence in hygiene practices.
Whether you're discovering urethral play for the first time or seeking wearable stimulation during partnered sex, this hollow insert offers accessible entry into cum-thru pleasure. The 2-inch insertable length provides comfortable internal stimulation without excessive depth, while the lightweight 0.14 lbs makes all-day wear feasible if desired. This is urethral jewelry meets sexual enhancement in one hypoallergenic stainless steel package.
Cum-thru (also called hollow or open-channel design) means the urethral insert has a hole running through its center, allowing fluids to pass through while the insert is worn. You can urinate and ejaculate naturally without removing the plug. This distinguishes it from solid urethral sounds which must be removed before ejaculation. The hollow channel transforms this from a temporary exploration tool into wearable sexual enhancement that intensifies orgasm through internal stimulation as ejaculate travels through the insert.
Yes — 0.10 inches (approximately 2.5mm diameter) is the thinnest urethral sound size commonly available and exceptionally beginner-friendly. For context, most beginner urethral sound sets start around 4-5mm diameter, so this is nearly half that width. Customer feedback shows that first-timers appreciate the ultra-slim sizing because insertion feels less intimidating and more manageable. If you can comfortably insert a cotton swab, you can likely handle this diameter with proper lubrication.
Absolutely — that's one of the primary benefits of hollow urethral inserts. You can wear it during masturbation, oral sex, or even penetrative sex (though communicate with your partner first). The internal stimulation adds unique sensation throughout arousal and climax. Some partners find the decorative ball stopper visually appealing. In our experience, many couples incorporate wearable urethral plugs as shared exploration — the person wearing it experiences internal pleasure while their partner enjoys the psychological element of the adornment.
Most enthusiasts describe it as intensely pleasurable — the ejaculate traveling through the narrow internal channel creates additional stimulation and awareness during orgasm. The sensation is distinct from regular ejaculation because you feel the fluid's journey through the urethral insert. Many folks report more intense, prolonged orgasms when wearing hollow plugs. The experience varies individually, but customer feedback consistently shows heightened climax intensity compared to unadorned orgasms.
The ball stopper serves dual functions: safety and aesthetics. Functionally, it prevents the insert from sliding too deep into your urethra — it rests against your urethral opening when fully inserted, acting as a built-in safety limit. Aesthetically, it adorns the head of your penis with a decorative jewelry element, creating visual appeal during wear. Some folks appreciate the sensual adornment aspect as much as the internal stimulation.
Run hot water through the hollow channel immediately after use to flush out any residual fluids. Then wash the entire insert with antibacterial soap, paying attention to both ends of the channel. For thorough sanitization, boil the stainless steel insert for 10 minutes — this sterilizes both external surfaces and the internal channel. The boiling water circulates through the hollow center, ensuring complete hygiene. Let air dry completely before storage.
Both options work — it depends on your comfort and goals. Some enthusiasts wear hollow urethral inserts for extended periods (hours) during daily activities, enjoying subtle constant stimulation and the psychological element of secret adornment. Others insert specifically for sexual encounters for heightened arousal and orgasm intensity. The lightweight 0.14 lbs and comfortable 2-inch length make extended wear feasible. We recommend starting with short wear periods (30-60 minutes) to gauge your body's response before attempting all-day wear.
Add the Chasm Stainless Steel Cum-Thru Urethral Insert to your cart for discreet California shipping, privacy-safe billing, and a mystery gift in every order.
Product Disclaimer: These products as with all products on this site are supplied AS IS. No warranty is given either implied or expressed. Products are intended as novelty only, and no representation is made or implied as to their suitability or safety for any particular use. Purchasers use the products entirely at their own risk. The manufacturer or TheDildoHub is not liable for any direct, indirect, incidental or consequential damage or loss howsoever arising caused by use or misuse of the products. This includes, but is not limited to, damage to the products and personal injury or damages due to use or misuse.
From the moment you check out to the moment your package arrives, every step is designed so that what you buy stays entirely between you and us.
How we appear on your statement
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What Discreet Shipping Means
Every package we send is prepared with your privacy in mind. If someone sees your order on your doorstep, in your mailroom, or being carried by you — they will have no way to know what's inside. Even carrier employees handling your package cannot tell from the exterior that it contains intimate products.
Plain Packaging
Standard brown cardboard boxes or plain poly mailers — no decorative branding of any kind.
No Branding
No logos, no product names, no "TheDildoHub" anywhere on the exterior of your package.
Neutral Return Address
Shows a city and state only — no business name, no indication of the sender's nature.
Carrier Barcodes Only
The only markings on your parcel are your shipping label and carrier tracking information.
Free Shipping
Free Super Saver Shipping applies automatically to all U.S. orders over $139 — no promo code needed. Every free shipment receives the exact same discreet packaging treatment as any paid tier. Your privacy is never a function of how much you spend.
Order Processing
Orders placed before the daily cutoff on business days are packed and handed to the carrier the same day — including Rush orders. Orders placed after the cutoff, or on weekends and federal holidays, ship the next business day.
Daily Cutoff Time
1:00 PM Pacific (4:00 PM Eastern) on business days. All tiers — including Rush — ship same day if ordered before this time.
Tracking Updates
Tracking information may take 24–48 hours to update after your order ships. If it hasn't moved after 48 hours, contact us.
Shipping Rates
All rates are flat per order — not calculated by weight. The same price applies whether you're in Manhattan or rural Alaska. TheDildoHub covers any additional carrier costs; you will never be charged more than the rate shown at checkout.
Choose your speed
Super Saver
7–10 Business Days
Free
on orders over $139
Economy
5–7 Business Days
$10.95
Express
4–5 Business Days
$24.95
Priority
3–4 Business Days
$34.95
Rush
1–2 Business Days
$64.95
Transit times begin after your order ships — processing time is not included. Times are estimates; carrier delays, weather, and peak volumes can affect delivery.
🇺🇸 Domestic Shipping
All 50 states · APO/FPO/DPO · U.S. Territories · PO Boxes
| Method | Transit Time | Price | Typical Carriers & Services |
|---|---|---|---|
| Super Saver (Free) | 7–10 Business Days | Free (>$139) | USPS Ground Advantage, FedEx Ground Economy, UPS SurePost, OnTrac Ground |
| Economy | 5–7 Business Days | $10.95 | USPS Ground Advantage, FedEx Ground, FedEx Home Delivery, UPS Ground, OnTrac Standard |
| Express | 4–5 Business Days | $24.95 | USPS Priority Mail, FedEx Home Delivery, UPS Ground, OnTrac Express |
| Priority | 3–4 Business Days | $34.95 | USPS Priority Mail Express, FedEx Express Saver, FedEx 2Day, UPS 3 Day Select, UPS 2nd Day Air |
| Rush | 1–2 Business Days | $64.95 | USPS Priority Mail Express, FedEx 2Day, FedEx Overnight, UPS 2nd Day Air, UPS Next Day Air Saver |
Transit times begin after your order ships. If significantly delayed, contact us and we'll make it right.
We use USPS, FedEx, UPS, and OnTrac for reliable nationwide shipping. Our fulfillment team automatically selects the best carrier based on your location, speed, and package details. You cannot select a specific carrier, but every carrier delivers in plain, unmarked packaging.
Services by carrier:
Super Saver uses the most cost-efficient routing available at the time of fulfillment — typically consolidators or ground services with longer transit windows. Paid tiers use faster, dedicated carrier services. The same discreet packaging applies regardless of speed.
We may occasionally use UniUni or SpeedX for final-mile delivery in certain areas — crowdsourced delivery networks carefully vetted to meet our service and discretion standards. Your package remains in plain, unmarked packaging regardless of which carrier completes the final delivery.
TheDildoHub is proud to serve American servicemembers. All military shipments go exclusively via USPS as required by military postal regulations. Tracking is always available. Delivery may take additional time due to military postal routing, but every shipment leaves with the same discreet packaging standards.
Yes, we ship discreetly to PO Boxes across the nation via USPS.
You can add delivery instructions at checkout. Please note that while we pass these on to the carrier, we cannot guarantee they will be followed in all cases. If delivery privacy is a concern, we recommend selecting a tracked speed so you can monitor arrival.
No carrier can truly guarantee delivery in practice. Even express services are subject to delays from weather, carrier volume, and other factors outside our control. Stating estimates rather than guarantees avoids confusion. If your shipment is significantly delayed, we'll work with you to make it right.
🌍 International Shipping
Canada · UK · Australia · New Zealand · European Union & more
| Method | Transit Time | Price | Typical Carriers & Services |
|---|---|---|---|
| International Saver+ | 10–15 Business Days | $34.95 | USPS First-Class International, DHL eCommerce, FedEx International Economy |
| International Standard | 7–12 Business Days | $44.95 | USPS Priority Mail International, UPS Standard, FedEx International Economy |
| International Priority+ | 4–6 Business Days | $64.95 | DHL Express, FedEx International Priority, UPS Worldwide Expedited, USPS Priority Mail Express International |
| International Rush | 2–5 Business Days | $84.95 | DHL Express, FedEx International Priority, UPS Worldwide Express |
Transit times are estimates from date of dispatch and exclude processing time. Customs clearance may add additional days. If significantly delayed, contact us.
Our global carriers include USPS, UPS, FedEx, and DHL depending on destination and tier. All international shipments receive the same discreet packaging as domestic orders.
We ship to Canada, the United Kingdom, Australia, New Zealand, and EU countries including Germany, France, Netherlands, Spain, Italy, and more. For a complete list, see our International Shipping Policy.
For complete details — including customs duties, delivery times, and all supported countries — please visit our International Shipping Policy.
Where We Ship From
We operate fulfillment centers in California and New Jersey, positioned to reach you quickly wherever you are in the US. Our system automatically selects the best facility based on inventory and proximity to your address.
California
West Coast hub serving the western United States and beyond. Plain packaging, no exceptions.
New Jersey
East Coast hub for faster delivery across the northeastern and southeastern US. Same discreet standards.
After Your Order Ships
Once your order is on its way, keeping tabs on it is easy — and if anything goes wrong, we're here to sort it out.
Order Confirmation Email
Your shipping notification contains a tracking link. Click it to follow your package in real time via the carrier's site.
Shop App by Shopify
Download the free Shop app to track all your orders from one place. Available on iOS and Android.
Lost or Missing Packages
If your tracking shows delivered but nothing arrived — or your shipment appears stuck — contact us right away. In most cases, packages are misrouted and located within a few days. If confirmed lost, we reship at no additional cost to you.
International Customs & Duties
International orders may be subject to customs duties, import taxes, or brokerage fees imposed by your country. These are not included in your order total and are the recipient's responsibility. See our International Shipping Policy for details.
Our Guarantee
For health and safety reasons, we do not accept returns on any item, used or unused. That said, we stand fully behind every product we sell.
Many of our products are USB or battery-operated, and on occasion a unit may arrive defective or stop working as expected. Our support team will first walk you through basic troubleshooting — often the quickest path to getting things working. If troubleshooting doesn't resolve the issue, we provide a hassle-free replacement at no additional cost.
How to request a replacement
Contact our support team — available 7 days a week.
Share your order number and product name along with a brief description of the issue.
If the defect is visible, include a photo — this speeds up the process significantly.
Once validated, your replacement ships promptly in the same discreet packaging.
Need help?
Questions about your order, a shipment, or anything else — our support team has you covered.
