Member V2 SprocketBolt & socket-drive sprocketMaterial: 7075 aluminumTeeth: 1/8"Bore (mm): 23.8Size: 25tThickness (mm): 8.8Adapter: 19mm & 22mm includedExtra info:american made,5 bolt holes,3D circle designWeight (kg): 0.087 (25t)Color: black, rasta, raw, red