Vac-U-Lock - Knuckle Up

Name: Vac-U-Lock - Knuckle Up
Brand: Doc Johnson
SKU: 1010-12-BX
Price: 11.89 USD
Availability: InStock
Rating: 4.5 (2 reviews)

$11.89 ~~$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 (4.5 / 5 · 2 reviews)

Eva T. ★★★★★ Aug 28, 2026

Snapped it on and the clicking mechanism felt solid right away—no wobble or cheap give. The knuckle grip shape sits naturally in my hand, and the cool factor is honestly the best part of the whole setup.

Victoria ★★★★☆ Aug 26, 2026

It’s a fun little novelty that definitely adds a playful edge to playtime, and the compatibility with the system is spot-on. Only gripe is the “cool factor” wears off a bit once you realize how limited the positioning options are, but it’s still a solid buy for the price.