Features With heat treatment, the product has good toughness and increased structural strength. Good metal texture, comfortable coating surface, easy to hold, so that the output torque is higher. The unique thrust bearing easily converts the torque applied by the handle into greater clamping force. Beautiful and practical concave and convex surface design, so that the front and back jackets can effectively cooperate and reduce the vibration of the jacket. Scope of application: Applicable to AC electric drills with power less than 700W and various DC electric drills. 1. With heat treatment, the product has good toughness and increased structural strength. 2. Good metal texture, comfortable coating surface, easy to hold, so that the output torque is higher. 3. The unique thrust bearing allows you to easily convert the torque applied by the handle into a greater clamping force. 4. Beautiful and practical concave and convex surface design, so that the front and back jackets can effectively cooperate and reduce the vibration of the jacket. 5. Scope of application: Applicable to AC electric drills with power less than 700W and various DC electric drills. Specification: Feature: With heat treatment, the product has good toughness and higher structural strength. Good metal texture, comfortable coating surface, easy to hold, so that the output torque becomes higher. The single thrust bearing is easy to convert the torque applied by the handle into higher clamping force. Beautiful and practical concave and convex surface design, so that the front and back jackets can effectively cooperate and reduce the vibration of the jacket. Scope of application: Applicable to AC electric drills with power less than 700W and various DC electric drills. drills. Specification: Material: High Speed Steel Applicable Machine: Impact Drill Specification: 2-13mm 1/2 Manual clamping chuck: all- 13mm self-locking metal chuck Scope of application: Applicable to AC electric drills and DC electric drills with power less than 700W Weight: 282g/9.9oz Packing List: 1 x Drill Chuck Note: 1. The actual colour of the product may differ from the photo due to the light. 2. Please allow slight deviation for the product measurement.3. Please note that the new type and the Package List