ER20 Spring Collet Set, One Quarter Inch Chuck Fit For CNC Engraving Machines And Milling Centers, 0.03mm Precision, Pro Grade 40Cr Steel, Stable Close Clamping For Lathe And CNC Milling, Set Of Two For Smooth, Reliable Cutting

ER20 Spring Collet Set for 1/4-Inch CNC Milling
✔️ 0.03mm precision ER20 collets, 40Cr steel, 2-pack set

These ER20 Spring Collets are precision tool holders designed for CNC milling centers, engraving machines, and general machining setups. They deliver tight clamping and stable cutting for consistent results across milling operations.

✅ Clamping diameter: 1/4-inch (6.35 mm)
✅ Material: 40Cr Steel
✅ Precision: 0.03 mm (0.0012 in)
✅ Total height: 31.5 mm (1.24 in)
✅ Outer diameter max: 21 mm (0.83 in)
✅ Package: 2 pcs
✅ Model: ER20
✅ Collet must be placed into collet chuck nut before inserting into collet chuck.

💡 What is an ER20 spring collet used for in machining?

- Handy for holding end mills and small tooling in CNC milling machines. - Close clamping helps reduce tool runout and improve precision. - Works with engraving machines, milling centers, and general machining setups. - Made from 40Cr steel for durability and long life.