Estimating delivery…!
Order before 1 PM PT on weekdays and your order ships the same day. Our team will reach out if we need any extra delivery details.
The quick take
Folks, meet the Vac-U-Lock Fucking Machine Adapter — a compact upgrade that unlocks the full Vac-U-Lock dildo range for compatible fucking machines. Designed specifically for the Rear Penetration, Probe Plus,… Read more
Folks, meet the Vac-U-Lock Fucking Machine Adapter — a compact upgrade that unlocks the full Vac-U-Lock dildo range for compatible fucking machines. Designed specifically for the Rear Penetration, Probe Plus, and Black Magic Fucking Machines. Lightweight at 0.28 lbs. Dildo not included.
The Vac-U-Lock plug-and-socket connection makes dildo swapping instant — no retaining straps, no adjustment between sessions. If you own a Vac-U-Lock dildo collection, this adapter turns your machine into a genuinely versatile setup. We've found it's the first upgrade most fucking machine owners make once they move beyond their first dildo. Confirm your machine model is listed above before purchasing. Ships from sunny California with discreet packaging, privacy-safe billing, and free mystery goodies.
The Dildo Hub has been featured in leading publications covering modern sexuality and wellness.
Vac-U-Lock Fucking Machine Adapter
$120.95$153.95-21%
What is the Vac-U-Lock system? Vac-U-Lock is a dildo attachment standard developed by Doc Johnson that uses a plug-and-socket connection — a hollow socket on the toy and a matching plug on the adapter. Dildos click in securely without straps, rings, or tools, and swap out in seconds. The system is widely adopted across the industry, meaning a large range of dildos from multiple manufacturers are compatible. In our experience curating fucking machine accessories, switching from a standard strap system to Vac-U-Lock is the most practical single upgrade for machine owners with multiple dildos — it removes the biggest friction point between sessions.
Folks, meet the Vac-U-Lock Fucking Machine Adapter — a compact upgrade that unlocks the full Vac-U-Lock dildo range for compatible fucking machines. Designed specifically for the Rear Penetration, Probe Plus, and Black Magic Fucking Machines. Lightweight at 0.28 lbs. Dildo not included.
The Vac-U-Lock plug-and-socket connection makes dildo swapping instant — no retaining straps, no adjustment between sessions. If you own a Vac-U-Lock dildo collection, this adapter turns your machine into a genuinely versatile setup. We've found it's the first upgrade most fucking machine owners make once they move beyond their first dildo. Confirm your machine model is listed above before purchasing. Ships from sunny California with discreet packaging, privacy-safe billing, and free mystery goodies.
In the box:1 × Vac-U-Lock Fucking Machine Adapter. Dildo not included.
Quick specs: Vac-U-Lock compatible adapter, 0.28 lbs. Compatible with Rear Penetration, Probe Plus, and Black Magic Fucking Machines. Dildo not included.
Key Features
At-a-glance features for the Vac-U-Lock Fucking Machine Adapter
Vac-U-Lock compatible
Plug-and-socket connection supports the full range of Vac-U-Lock dildos.
Instant dildo swapping
No straps or tools — dildos click in and out in seconds between sessions.
Machine compatibility
Designed for Rear Penetration, Probe Plus, and Black Magic Fucking Machines.
Lightweight 0.28 lbs
Adds negligible weight to the machine arm during use.
Compatible machines: Rear Penetration, Probe Plus, Black Magic Fucking Machines
Weight: 0.28 lbs (127 g)
Dildo: Not included
Note: Confirm machine compatibility before purchasing — not universally compatible with all fucking machines
How to Use
Replace your machine's existing dildo attachment mechanism with this adapter, securing it to the machine arm per your machine's mounting system. Once fitted, insert any Vac-U-Lock compatible dildo's socket onto the adapter plug and press firmly until it clicks into place — the connection should feel solid with no wobble before use. Apply generous water-based lubricant to the dildo before each session. To swap dildos, pull the dildo free from the socket, clean per its material type using toy cleaner, and click the next one in. We recommend checking the adapter connection is seated firmly before running the machine at high speeds.
Care & Safety
Adapter maintenance: Wipe clean after each session. The connection socket can accumulate lubricant residue — clean the socket interior regularly to maintain a secure dildo connection over time.
Dildo hygiene: Clean all dildos per their material type after every use. If using PVC, TPE, or jelly dildos, be aware those materials are porous — see our material safety guide for hygiene guidance specific to each material type.
Frequently Asked Questions
Which machines is this adapter compatible with?
This adapter is designed specifically for the Rear Penetration Fucking Machine, the Probe Plus Fucking Machine, and the Black Magic Fucking Machine. It is not listed as compatible with all fucking machines — confirm your specific machine model matches one of these three before purchasing. If you own a different machine model, check whether that machine has its own Vac-U-Lock adapter listed in its accessories.
What Vac-U-Lock dildos work with this adapter?
Any dildo with a standard Vac-U-Lock socket (the hollow cup at the base) is compatible. Vac-U-Lock is a widely adopted industry standard — Doc Johnson produces an extensive range, and many other manufacturers have adopted the same socket system. If a dildo is labelled "Vac-U-Lock compatible" or features the characteristic hollow base socket, it will work with this adapter. Customer feedback shows this opens up significantly more dildo variety than any strap-based attachment system.
What's the advantage over the standard strap system?
The standard strap system (Velcro/webbing retaining strap) works with most flared-base dildos but requires manual tightening and adjustment every time you swap dildos, and the fit can vary depending on base shape. The Vac-U-Lock adapter uses a click-in socket — dildos seat fully in one motion with no adjustment, and the connection is consistent across all compatible dildos. In our experience, this makes mid-session dildo changes and session-to-session setup significantly faster and more reliable.
Do I need any tools to install this adapter?
Installation depends on how the adapter mounts to your specific machine arm — refer to your machine's documentation for the attachment method. Once fitted to the machine, no tools are required for day-to-day dildo swapping. The Vac-U-Lock plug-and-socket connection is entirely tool-free: insert, press until seated, use. Removal is equally straightforward — pull the dildo free from the socket by hand.
Can I use non-Vac-U-Lock dildos with this adapter?
No — this adapter is specifically designed for dildos with a Vac-U-Lock socket. Standard dildos without the hollow cup base socket cannot attach to a Vac-U-Lock plug. If you want to use non-Vac-U-Lock flared-base dildos, your machine's original strap system is the appropriate attachment method for those. Many users keep both systems and switch depending on which dildo they're using.
Unlock Every Vac-U-Lock Dildo — Fucking Machine Adapter
Add to your cart for discreet shipping, privacy-safe billing, and a mystery gift in every order.
For adult use only. Read full product description and information before use.
Shipping, Billing & Privacy
Last Updated: January 2026
Your privacy travels with every order.
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
Credit / Debit CardSp-Tdh-Br
PayPalTDH Retail Ltd
Some banks may display a slightly different or truncated version of these descriptors — this is determined by your financial institution and is outside our control.
— ✦ —
What Discreet Shipping Means
No logos. No hints. Just a normal parcel.
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
Spend $139 or more. Ship for free.
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.
$139+ships free
— ✦ —
Order Processing
Same-day fulfillment when it matters most.
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
Flat-rate. No surprises. Same price nationwide.
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
Free
Super Saver
7–10 Business Days
Free
on orders over $139
Economy
5–7 Business Days
$10.95
Popular
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
United States
All 50 states · APO/FPO/DPO · U.S. Territories · PO Boxes
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.
About our domestic carriers
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:
FedEx: Ground Economy, Ground, Home Delivery, Express Saver, 2Day, Overnight
UPS: SurePost, Ground, 3 Day Select, 2nd Day Air, Next Day Air Saver
USPS: Ground Advantage, Priority Mail, Priority Mail Express
OnTrac: Ground, Standard, Express
Why is Super Saver slower than Economy?
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.
Last-mile delivery partners
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.
Military address shipping (APO/FPO/DPO)
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.
PO Box delivery
Yes, we ship discreetly to PO Boxes across the nation via USPS.
Delivery instructions
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.
Why we don't guarantee delivery dates
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
Worldwide
Canada · UK · Australia · New Zealand · European Union & more
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.
International carriers we use
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.
International Saver+: USPS First-Class International, DHL eCommerce, FedEx International Economy
International Standard: USPS Priority Mail International, UPS Standard, FedEx International Economy
International Priority+: DHL Express, FedEx International Priority, UPS Worldwide Expedited, USPS Priority Mail Express International
International Rush: DHL Express, FedEx International Priority, UPS Worldwide Express
Countries we ship to
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.
Full 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
Two coasts. One standard of care.
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
Track it. Trust it.
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
100% Satisfaction. Hassle-free.
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.
