ER11 Collets 1 x ER11 Collet. Use with any standard ER collet chucks for coolant-thru tool applications. Hardened and precision ground. Gripping range: 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm. Widely used, boring, milling, drilling, silk attack, sculpture, CNC, and other processing.
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