Features:_x000D_ 1. The chuck is made of spring steel, hardened and ground, with high accuracy, and accurate internal thread._x000D_ 2. 5C hex smooth chuck for fixing workpieces on lathes or other machine tools._x000D_ 3. The collet is used to hold metals, plastics, carbides, graphite and ceramics in industrial manufacturing applications._x000D_ 4. Collets are also used in applications such as the manufacture of metal and wood components, semiconductor manufacturing and processes._x000D_ 5. Fine workmanship, good elasticity, high hardness and strong wear resistance._x000D_ _x000D_ Specification:_x000D_ Condition: 100% New_x000D_ Item Type: 5C Hex Collet_x000D_ Material: Spring Steel_x000D_ Size: 1/2", 1/4", 3/4", 3/8", 5/8" 7/8", 5/16" (optional)_x000D_ _x000D_ Package List:_x000D_ 1 * 5C Hex Collet_x000D_ _x000D_ Note:_x000D_ 1. Please allow slight error due to manual measurement. Thanks for your understanding._x000D_ 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.