Feature:_x000D__x000D_With heat treatment, the product has good toughness and higher structural strength. _x000D_The unique patent locking function breaks through the traditional locking method, with ratchets on the back. _x000D_The locking plate is installed in the back sleeve, which can prevent loosening and loosening in the work more effectively and make the clamp more reliable when holding the tool. _x000D_Good metal texture, comfortable coat surface. _x000D_The unique thrust bearing is easy to convert the torque applied by the handle into greater clamping force. _x000D_Scope of application: It is suitable for percussion drills with power above 1050W. _x000D__x000D_Specification:_x000D_Product Name: 0.8-10MM all-metal hand-tightened drill chuck thread interface_x000D_Clamping range: 0.8-10 mm_x000D_Connection Size: 3/8-24UNF_x000D_Scope of application: It is suitable for percussion drills with power above 1050W._x000D_Weight: 217g / 7.7oz_x000D__x000D_Package list:_x000D_1 * Drill Chuck_x000D__x000D_Note:_x000D_The actual product color may deviate from the photo due to light._x000D_There may be a slight deviation in the measurement of product. 1With heat treatment, the product has good toughness and higher structural strength. 2The locking plate is installed in the back sleeve, which can prevent loosening and loosening in the work more effectively and make the clamp more reliable when holding the tool. 3Good metal texture, comfortable coat surface. 4The unique thrust bearing is easy to convert the torque applied by the handle into greater clamping force. 5Scope of application: It is suitable for percussion drills with power above 1050W.