100% new and high quality. It is ER25 precision spring collet. Widely used in boring, milling, drilling, tapping, CNC, sculpture and other processing operations, also can be supported used with the holder of CNC tool. Big clamping force, wide clamping range, high accuracy. Color: silver Material: 45 Steel Diameter: 25mm Length: 34mm Clamping size: 2mm 3mm 4mm 5mm 6mm 7mm 8mm 9mm 10mm 11mm 12mm 13mm 14mm 15mm 16mm Package Included: 15 * ER25 Precision Spring Collet Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.