Features Efficient and Convenient: Equipped with B22 drill chuck and shank, it is easy to operate, the product has high operating efficiency and is easy to use. 40 Steel Material: This drill chuck is made of 40 steel material, which is durable, good wear resistance, long service life and more secure to use. Strong Clamping Force: clamping range 5-20mm, standard size, easy installation and disassembly. Seiko Manufacturing: This drill chuck has exquisite workmanship, each of our products is carefully designed and manufactured, and we have strict quality control system to ensure product quality and quality stability. Excellent After-sales Service: We provide you with high-quality after-sales service. If you have any questions, please feel free to contact us, and we will deal with it for you as soon as possible. Specification: Item Type: Drill Chuck Material: 40 Steel Specifications: B22 drill chuck + MT3 tool holder Clamping Range: 5-20mm Package List: 1 x Drill Chuck1 x Tool Holder1 x Key Package List 1 x Drill Chuck 1 x Tool Holder 1 x Key