Highest quality G23 Titanium, 100% NICKEL FREE and hypoallergenic , Bar Thickness: 14 Gauge (1.6mm), Bar Length: 6mm; Ball Size: 5/8mm , More comfortable, smooth and lighter than 316L Surgical Steel, super for people with sensitive skin to steel , It can be used as belly ring , Package include: 1 piece belly ring, come with one free gift box