The Triad Chamber Cock and Ball Ring is a luxury cock ring from Easytoys\' Sinner Gear Unbendable series. This toy is made of nickel-free metal so it feels heavier and smoother than any other sex toy. This cock ring has three rings in which you will insert your balls and your (semi-stiff) penis. This will give you a long lasting erection and an even more intense feeling. The cock ring can be used with any lubricant and can be cleaned fast and thoroughly. Measurements inside diameter: the big ring is five and a half centimeter and intended for balls and penis. Medium ring is five centimeter and intended for the balls. The smallest ring is four and a half centimeter and wraps around the penis.