[Unique locking method]: This electric drill chuck adapter uses a unique locking function, allowing the locking part to be installed in the back cover, which can more effectively prevent loosening during operation. work [Good performance]: This keyless drill chuck has good wear resistance and durability, after heat treatment, the toughness and structural strength are improved [Metal texture]: This 10mm drill chuck has good metal texture and comfortable jacket surface, which effectively improves comfort during use [Superior clamping force]: This unique 3/8 keyless chuck thrust bearing is easy to convert the torque applied by the handle into a larger clamping force, the clamping range is 0.8-10mm [ [Scope of application]: This professional 3/8 chuck is suitable for impact drills with power above 1050W Feature: With heat treatment, the product has good toughness and higher structural strength. The unique patented locking function breaks away from the traditional locking method, with pawls on the back. The lock plate is installed in the rear sleeve, which can more effectively prevent loosening and loosening during work and make the clamp more reliable when holding the tool. &nbsp ;Good metal texture, comfortable coating surface. The unique thrust bearing can easily convert the torque applied by the handle into greater clamping force. &nbsp ;Scope of application: It is suitable for impact drills with power above 1050W. Specification: Product name: Self-locking drill chuck thread interface all 0.8-10mm metal clamp Clamping range: 0.8-10mm Connection size: 3/8-24UNF Scope of application : It is suitable for impact drills with power above 1050W. Weight: 217g/7.7oz Package list: 1 * drill chuck Note: The actual color of the product may differ from the photo due to light. There may be a slight deviation in product measurement.