This stainless steel internally threaded curved barbell can be used to create a variety of looks by matching the size and ball size of your choice. With 316L stainless steel, it comes in a variety of sizes (16G, 14G, 12G, 10G, 8G, 6G) and inner lengths (1/4" to 1/2"). The ball size varies from 3mm to 12mm. Perfect for completing any look!