Features: 1FLEXIBLE AND HIGH STRENGTH: Spring collet chuck is made of excellent hard alloy after heat treatment and cold drawing and hardening, the strength is relatively high, and has certain flexibility and plasticity 2FATIGUE LIMIT: Collet chuck fatigue limit is comparable to that of a multicolored alloy spring under the same surface condition and full quench condition 3STRONG CHUCK: Collet chuck has high hardness, wear resistance, strength and toughness, as well as heat resistance, corrosion resistance and a series of excellent properties 4APPLICABLE SCENARIO: Collet chuck is widely used in milling, boring, drilling, tapping, CNC, engraving, spindle machine and other processing operations, CNC lathe, machining center, tapping machine, drilling machine, milling machine and other equipment operation 5WITH BOX: Spring collet is equipped with a storage box for easy storage, portability and access, and also prevents damage and loss Item Type: Spring Material: Carbide Package Included: 1 x Spring 1 x Storage Box