HHIP Pro MT3 medium duty CNC live center is designed for a long life doing medium duty work on a CNC lathe. With 60 Degree included angle. Point is high-carbon, heat treated alloy steel. Bearings are permanently lubricated. Body is hardened for extra strength and extra rigidity. Less than or equal to .0003" TIR. Maximum RPM is 4000. Weighs 2.2 lbs. Load rate is 660 lbs. Product Specifications: Morse Taper: 3; D: 23.83; D1: 24.8; D2 (Inch): 56; + or -: 60 A Degree; L: 171; L1: 91; L2: 45; Max. RPM: 4000; Load Rate Lbs.: 660; W.t. lbs.: 2.2. Weight (lbs.): 1.0000.