1) Bar and ball material are stainless steel, all shapes material are copper and cubic zirconia. 2) Bar Thickness is 20G(0.8mm), length is 6mm, Steel ball size is 3mm. Quantity: 1piece(Single) Color: Silver/Gold/Rose Gold #jewelry #earrings #stainlesssteel #SmallCartilageStud #traguspiercing #helixpiercing #20G #orbitalpiercing #rookpiercing