The diameter is 8mm x 11

To use bend sides slightly apart to insert and then bend it back to original position

Whats included: You will receive one industrial barbell

Pair of bezel opal internally threaded titanium nipple rings

Anodized Triple Spiked Titanium Hinged Ring Color:Purple The diameter is 8mm xAnodized triple spiked titanium hinged ring. Material: Titanium ASTM F 136 Gauge: 16g Quantity: One piece Anodizing uses electricity to increase the thickness of the natural oxide that occurs on the titanium. Depending on the voltage used determines the color. Anodizing titanium is completely safe and hypoallergenic. *there may be slight color variances between batches, since we anodize to order please allow an extra 1 2 days for handling time