When you are a person that prefers metal to rubber when using a cock ring You then will love the Echo Tri.. You are able to change depth of shocks and wave length on your electrical power box. Is available in a discreet black hinged box for storage. This http://analinflatables71122.mybloglicious.com/18662301/the-5-second-trick-for-rimba-thin-metal-0-5-cm-wide-cock-ring