Each pair have 5 different size from 28-40mm,can fit all your industrail cartilage earrings piercing,even short and long.There have different COLORS available,please choose one you like. Hypoallergenic and no nickel body jewelry Material: 316L Surgical Steel Gauge (Size):16G (1.2mm);Bar Length: 1 1/8" (28mm), 1 1/4" (32mm), 1 3/8" (35mm), 1 1/2" (38mm) and 1 5/8" (40mm); Ball Dia.:5mm Package includes: 5pcs 16g industrial barbell(each size one piece), in one gift flocking bag.