ER20 Collet Set 2mm To 13mm By 1mm Increments 12 Pc Set CNC Milling Collets Hardened Alloy Spring Steel Precision Runout Tested Ultra Low Runout Under 0.008mm Ideal For Home Workshop And Pro Machinists

ER20 Collet Set Spans 2mm Through 13mm Sizes in Steps ✔️ 12 Piece Hardened Alloy Steel Set With 0.008mm Runout

This ER20 collet set gives machinists a ready range of collets for CNC mills and routers in home shops or pro setups.

✅ Sizes run 2mm to 13mm by 1mm steps for twelve total pieces
✅ Made of hardened alloy spring steel at HRC 44-48
✅ Runout tested on four points per collet under 0.008mm for 3mm and up
✅ Comes in a fitted strong aluminum storage box

💡 What is a collet set used for in milling work? A collet set lets you grip round tool shanks securely in a spindle so cuts stay accurate and chatter stays low. This handy kit fits common CNC and manual mills without extra adapters. It keeps runout low across the full size range so finishes come out clean. The aluminum box keeps every collet organized and protected between jobs.

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