Features: Featuring a ratcheting selflocking mechanism and high strength metal construction, this chucks ensures secure tools grip and long last durability for demanding drilling and fastening tasks. The precise engineered metal chucks with quick changes compatibility seamlessly fits electric wrenches, cordless drills, and rotary tools, enabling effortless bit swaps in seconds. Ideal for enthusiasts, professional mechanics, and industrial workers requiring reliability tool accessories for repetitive tightening and drilling operations. Perfect for woodworking projects, metal fabrication workshops, and plastic component assembly lines requiring vibrations resistant, slipfree performances. Its compact design with corrosions resistant alloy components provides optimal balance and portability for overhead installations or confined workspaces applications. Specifications: Component: Plastic + Metal Size:Approx.40x64mm/1.57x2.52inch Option Type:10mm chucks 3/8,13mm chucks 1/2; Application: It can be used for drilling and tightening operations of various materials such as wood, metal, plastic and is suitable for various scenarios such as home, factory production and maintenance. Package Includes: 1pc Metal chucks note: Please allow 1-10mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.