14pcs ER20 Spring Collet Set for CNC Engraving Machine and Milling Lathe Tool Range 1/16", 3/32",1/8", 5/32",3/16", 7/32"1/4", 9/32",5/16",11/32", 3/8",13/32", 7/16", 1/2"

14Pcs ER20 Collet Set; Collet size:1/16", 3/32",1/8", 5/32",3/16",7/32", 1/4",9/32", 5/16", 11/32", 3/8", 13/32", 7/16", 1/2". Spring Collet Set for CNC Engraving Machine Milling Tool Holder. | ER20 Spring Collet made of high grade spring steel, good elasticity and shock resisitance. Practical in performance. Tools will never get stuck in holder, improving work efficiency. Suitable for professionals and hobbyists. | ER20 Spring Collet Set suitable for boring, milling, drilling, tapping, engraving, CNC, spindle machines, and other processing. Use with any standard ER collet chucks for coolant-thru tool applications. | The angled slots increase rigidity, ensures tight clamping force, prevents dust and iron filings from entering, thereby avoiding the accuracy of the chuck being affected. | ER20 Spring Collet Set for CNC Engraving Machine and Milling Lathe Tool, If you have any questions, please contact us, we will try our best.