ER32 Collet Set From 3Mm To 20Mm By 1Mm Increments 18 Piece Set In Pro Grade Durable Aluminum Box Precision Ground With Ultra Low Runout Of 0.0003 Inches For CNC Milling And Machining

ER32 Collet Set 3-20 mm, 1 mm steps, 18 pc
✔️ 18-piece pro set in aluminum box; runout 0.0003 in at 3-20 mm

Designed for CNC milling and precision machining, this ER32 collet set covers 3 mm to 20 mm in 1 mm increments. Each collet is precision-ground, hardened to HRC 44-48, and tested for runout, and the set ships in a sturdy aluminum box for organized storage and quick tool changes.

✅ 3-20 mm range in 1 mm increments (18 pieces)
✅ Material: alloy spring steel hardened to HRC 44-48
✅ Precision runout: 0.0003 in (0.008 mm) from 3.0 mm up; 0.00059 in (0.015 mm) below 3.0 mm
✅ Aluminum storage box included
✅ Each collet tested at four points for accuracy

💡 What is an ER32 collet set used for in CNC milling? This handy set helps hold cutting tools firmly in spindles for accurate machining. - Handy for tool shanks 3-20 mm in mills and routers - Improves grip and runout control for better surface finish - Made from hardened alloy spring steel, rated HRC 44-48 - Stored securely in a durable aluminum box