Features Suitable for quick clamping on CNC machines Can replace traditional extension rod, its operation is convenient and quick The through holes allow machining of long parts Made of carbon steel material, high strength, not easy to damage, long service life Available in three styles for choices Feature: 1. Suitable for quick clamping on CNC machines 2. Can replace traditional extension rod, its operation is convenient and quick 3. The through holes allow machining of long parts 4. Made of carbon steel material, high strength, not easy to damage, long service life 5. Available in three styles for choices Specification: Item Type: Hex ColletMaterial: Carbon steel Accuracy: 0.015 Color: Silver Packing Size: 7.5 x 5 x 5cmOptional Style: ER25, ER32UM, ER40 Package List: 1 x Hex Collet Note: New‑style and old‑style are shipped randomly Package List 1 x Hex Collet