🔩 ER Collets – ER11, ER16, & ER20ER Collets ER11, ER16, & ER20 Accurate. Reliable. CNC Ready. Whether you're running a traditional spindle or a full ATC system, our ER11, ER16, and ER20 collets deliver the precision and durability you need. Engineered for woodworking applications and ISO20 tool holders, these collets ensure an ultra tight grip with minimal runoutkeeping your cuts consistent and clean. Key Features Great Precision for Woodworking:0. 0004" (0. 01mm) runout for

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regardless of your selections

they're too short to offer a probe option

you can use them on the Woodworker and Journeyman too

Whether you're dialing in tight tolerances or prepping for multi-bit projects

🔧 What’s Included:

The stock Superthane material we sell is 10mm OD and thus may take some massaging to fit through the standard compression nuts on top of the water-cooled spindles

🛡️ Safe

cutting metal

These 6mm O

Quick-change brush tracks for easy support of multiple brush lengths

Perfect for automatic Z-height calibration