Yantu 30pcs Stainless Steel 15gauge Rubber Stripe Tongue Ring Barbell Piercing Jewelry Item Tape:Body-piercing Material: Stainless Steel + Resin Stem diameter: 1.4 mm Stem length : 19 mm The ball diameter: 6/6 mm Qty: 30 pcs The ball/cone will run off from the stem because of long transportation and rough handle by postman,it's not broken,just screw into stem by yourself The ball/cone color is randomly sent,will vary from picture converse : 1 inch = 2.54cm or 1cm = 0.393 inch