... pipes, tubing that would "swallow" a regular center. Bull nose live centers.The tip of bull nose center uses Cr-Mo steel and hardened to ... HRC 60° ± 1°.The center uses combination of ... that would "swallow" a regular live center.Accurracy: ≤0.005 to ≤0.020 .Morse Taper Shank: MT2,MT3,MT4,MT5,MT6 . Bull nose live center