Vac-U-Lock - Knuckle Up

Name: Vac-U-Lock - Knuckle Up
Brand: Doc Johnson
SKU: 1010-12-BX
Price: 15.22 USD
Availability: InStock
Rating: 4.6 (5 reviews)

$15.22 ~~$23.78~~ In stock

Category: Accessories

Taking hands-on play to the next level, this feisty Knuckle Up accessory will delight and amaze you with its novelty, functionality, and its undeniable ‘cool factor’. The Knuckle Up accessory is compatible with the entire selection of Vac-U-Lock attachments, with its one-size-fits-all knuckle rings sitting below a standard Vac-U-Lock plug. You won’t believe how versatile this toy is! It’s perfect for both masturbation and playing with a partner! What are you waiting for?! Experience endless pleasurable possibilities with the most user-friendly sex toy system in the world.

Customer Reviews (4.6 / 5 · 5 reviews)

Matthew C. ★★★★★ Sep 11, 2026

The knuckle shape adds a completely different angle to solo play, and it clips onto my existing setup in seconds. Feels sturdy too, no wobble at all once it's locked in.

Steven ★★★★★ Sep 8, 2026

Picked this up for a themed night and the fit is rock solid with the standard base, no wobble mid-action. The knuckle design adds a playful edge that actually improves grip during play. Charged me up for a fun evening, zero regrets on the novelty factor.

Daniel M. ★★★★★ Sep 7, 2026

The design is way cooler in person than in the photos, and it locks on securely with a solid click that feels reassuring. It definitely adds a fun, playful edge to sessions without compromising on stability. Honestly, the novelty factor alone makes it worth the money.