features:<br />-100%  and high quality.<br />-made of high quality alloy steel， sturdy and durable.<br />-the hardened and ground alloy steel construction provides extended durability and long service life.<br />-double ball bearing .<br /><br />specification:<br />color:black+silver<br />weight:2160g<br />material:steel<br />center point:60 degree<br />max diameter:75mm/2.95"<br />min diameter:38mm/1.5"<br /><br />package include:<br />1 x mk3 live center<br />