The ring is made of surgical stainless steel.
Glans Ring Measurement (measure under your cock head when FULLY hard):
Small: 25mm
Medium: 28mm
Large: 30mm
XL: 32mm
This unique Anal Hook features a stainless steel removable ball at the end which is used to be inserted into the anus and the ring connects to the ropes that you will use to tie your partner or yourself up!