Screw back tunnels plugs with mother of pearl shell in the front. Made from 316L stainless steel.Available sizes: 2G (6mm), 0G (8mm), 00G (10mm), 7/16" (11mm), 1/2" (12mm), 9/16" (14mm), 5/8" (16mm).Full Length: 13mm X Wearable area: 8mm.Sold in pairs (2pcs).