Features: 3/8-24UNF Thread 0.8mm-10mm Keyless Metal Drill Chuck Quick Change Adapter For Rotary Hammer Hand Electric Hammer Drill Tool * new and high quality. *Made of high-quality materials, durable and practical. *With heat treatment, the product has good toughness and higher structural strength. *The unique locking function breaks through the traditional locking method, with ratchets on the back. *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. *Good metal texture, comfortable coat surface. *The unique thrust bearing is easy to convert the torque applied by the handle into greater clamping force. *Scope of application: It is suitable for percussion drills with power above 1050W. Specifications: *Material: Metal *Color: Black *Clamping range: 0.8-10 mm *Connection Thread: 3/8-24UNF *Weight: about 217g / 7.7oz Package Contents: 1*Drill Chuck Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data.