The Vac-U-Lock Knuckle Up is a hands-on accessory designed for effortless, intuitive control. One-size-fits-all knuckle rings sit comfortably below a standard Vac-U-Lock plug, making it fully compatible with the entire Vac-U-Lock attachment system.
Versatile enough for solo use or partnered play, it gives you a secure, natural grip so you can focus entirely on the experience.
Compatible with all Vac-U-Lock attachments
One-size-fits-all knuckle ring design
Ideal for solo or partnered play
Part of the world's most versatile modular toy system
