7Pcs ER20 Spring Collet Set For CNC Milling Lathe Tool Engraving Machine Steel

7PC ER20 Spring Collet 1/8 - 1/2 For CNC Milling Lathe Tool Engraving Machine Feature: 1: Special angled slots increase rigidity，can be used for clamping drill milling Tool straight shank tool. 2: Performance stability high accuracy 3: Large holding force wide clamping range，better overall balance of tool holder assembly 4: Spiral collets are widely used in boring milling drilling tapping grinding and engraving and so on. Specifics: Condition: 100% Brand New Model: ER20 Material: High Grade Carbon Steel Run-Out Tolerance: 0.015MM (0.0006 ) Gripping Range: 1/8 -1/2 (1/8 3/16 1/4 5/16 3/8 7/16 1/2 ) Note: 1.Protects tool holder from contaminants. 2.Use with any standard ER collet chucks for coolant-thru tool applications. 3.Installation instructions not included Tool not included. 4.Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same. Package Included: 7Pcs ER20 Collets