ITEM NAME:10pcs ER20 Precision Spring Collet Set CNC Milling Lathe Tool ER20 Spring C M5D6 10pcs ER20 Precision Spring Collet Set CNC Milling Lathe Tool ER20 Spring C M5D6 100% Brand New and High Quality. Type; CNC milling Lathe Tool Spring collet, CNC machine tools are good accessories, specifications and diverse, easy to choose. Excellent quality. Straight folder Accessories: lathe running high precision, firmly grasp the mill. MODEL: ER20 Color: Silver material: metal Run-Out Tolerance: 0.015MM (0.0006 inch) Gripping Range: 3mm,1/8mm,4mm,5mm,6mm,1/4mm,8mm,10mm,12mm,1/2mm Package included; 10 x ER20 Spring Collet Only the above package content, other products are not included. Note: Light shooting 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..MODEL: ER20. 10 x ER20 Spring Collet. Type; CNC milling Lathe Tool. Spring collet, CNC machine tools are good accessories, specifications and diverse, easy to choose. Excellent quality. Straight folder Accessories: lathe running high precision, firmly grasp the mill.