Specification: Brand new Color: Silver Size: approx. 138*39mm/5.43*1.54" Shank Diameter: approx. 13.7mm/0.54" Apical Axis: T10 Steel, Quenching hardness: 55-60HRC Main Part: 40CR Steel, Quenching hardness: 45-50HRC Accuracy: 0.001 Max RPM: 5000 After Treatment Hardness: HRc60o±2o Feature: Designed for high-speed lathe and CNC lathe to achieve high precision. Triple ball bearing design, has extended long spindle with CNC point to enhance grinding wheel clearance. Shaft is made of alloy steel through heat treatment. High rigidity, high abrasion resistance. High strength and hardness. Convenient to use. Durable in use. Package included: 1 x Lathe Live Center Taper Note: Please allow 0-1cm size errors due to manual measurement. Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same.