Features:* Made of high-quality materials, durable and practical.* Through heat treatment, the product has good toughness and higher structural strength.* The unique locking function breaks the traditional locking method, with ratchets on the back.* The locking plate is installed in the rear sleeve, which can more effectively prevent loosening and loosening in work and make the clamp more reliable when holding the tool.* Good textured metal, comfortable sweatshirt.* Unique thrust bearing easily converts the torque applied by the handle into greater clamping force.* Scope of application: gives applies to percussion drills with power above 1050W. Specifications:* Material: Metal* Color: Black* Clamping Range: 0.8-10mm* Connection Thread: 3/8-24UNF* Quantity: 4pcs Package Included: 1 * Drill Chuck 1 * SDS Plus Adapter 1 * Hex Shank Adapter 1 * Square Converter with screw Notes: 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.