A very cool new concept in body jewelry! This is an 8 Gauge Steel Pad Lock. The lock is made of 3 different parts: The Screw, which you unscrew with a fingernail or flat tip screw driver; The Base, which holds the lock and screw in place; and The Lock, which is the U Shape object that you place through your piercing. This Steel Lock can even be used as an accessory to a captive ring, tunnel ear plugs, etc. The inner diameter of the lock is 1/4" (7mm) and the entire piece is crafted from 316L Surgical Grade Stainless Steel for your safety. Barbell Size: 8 Gauge (3mm) Brand: FreshTrends Age: Adult Condition: New