13pcs 1-13mm ER20 Spring Collet Set CNC Workholding Engraving&Milling Lathe

Those ER20 collets are extensively applied to drilling boring milling tapping carving CNC router lathe etc. With high precision and strong holding force. 13 sizes a set can fulfill your requirements. Precision ground and hand inspected. Only the very best materials and grinding techniques used Material: 45 # steel MODEL: ER20 collet and High Quality. Type: CNC milling Lathe Color: Silver Size: 1.2.3.4.5.6.7.8.9.10.11.12.13mm Package included 13* Milling Chuck Collet