TECHNICAL SPECIFICATION: With knurled Grip, Manufactured from High Grade Carbon Steel, 60˚ Precisely Ground Point, Hardened to 60-63 HRC, Maximum Radial Run-out - 0.015 mm, Thrust Ball bearing for Axial Load, Taper Roller Bearing for Centrifugal Load, Knurled Body for firm Grip. HSN CODE: 84669390.