1pc Solid 316L Surgical Steel Septum Ring / Buffalo Taper Expander Pierced Nose Ring 1pc Steel Septum Ring / Buffalo Taper with O-rings Fast Shipping - you choose your gauge from the above menu! Material: Surgical Steel (O-Rings included) Internal Diameter: 1/2" (sizes 14g thru 6g), 5/8" (sizes 4g and 2g), 3/4" (sizes 0g and 00g) This product is sold by the piece, if wanting a PAIR order TWO!