ER25 precision spring collet. Widely used in boring, milling, drilling, tapping, sculpture, and other machining operations. Can be used with tool holders. High clamping force, wide clamping range, high accuracy. ER25 collet is convenient for use with MT3 cutter bar. Clamping size: 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm. Model Number: ER25 Application: Milling Cutter Color: Silver + Black Material: Metal Package Contents: 9 x ER25 collets 1 x MT3-M12 extension rod 1 x wrench Only the above package content is included; other items are not included. Note: Light and different displays may cause the color of the item to appear slightly different from the real thing. Measurement error allowance is +/- 1-3 cm.