★Spare part - Spare Binding Loop Ring for HTV4HTV4 Spare Ring Chastity Ring not fitting? Nothing to worry about! Oxy shop is the only shop offering spare Chastity Rings with a Binding loop. These rings are fitting to HTV4 devices with Bindin Loop or without it. Chastity Spare Parts This is a great option if you will spend quite some time being locked in Holy Trainer and need other ring sizes for the Chastity device. You came to the right place if you want to switch from a normal ring to a Ring