This suction lock has been designed to be used with silicone toys and allow them to be use with our Mercy belt strap on. This Suction lock interchanges the standard O-ring on the strap on. The Suction lock can also be used with the Vibrator strap set in place of the holding bands to hold a silicone toy inside someone.

Sizing: 

Large is designed for approximately 12.5mm diameter hole in Silicone toys. 

Small is designed for approximately 7-5.5mm diameter hole in Silicone toys.

Softer toys will generally have a smaller hole as the silicone has a higher elasticity and there for needs the smaller size hole to hold on to the lock.