Feature: MT2 0.001 CNC Precision Long Spindle Lathe Live Center Taper Tool Perfect 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 Made of high quality steel, sturdy and high abrasion resistance Shaft is made of alloy steel through heat treatment, high rigidity and durability. and practical to use. Name:MT2 Taper Live Center Triple Bearing :T10 Steel,Quenching hardness:55-60HRC Main part:40CR Steel,Quenching hardness:45-50HRC Shank Diameter: 13.7mm/0.54 inch (.) Dimension: 138 x 39mm/5.643 x1.54 inch (.) Accuracy: 0.001 Max RPM: 5000 After treatment hardness:HRc60o±2o Material: steel colour: silver Package Contents: 1 x Lathe Live Center Taper Tool Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.