Features 1、Using high‑quality 40CR material, and after quenching treatment, with high hardness and wear resistance. 2、The clamping jaws of the drill chuck are firmly clamped and locked to prevent slipping during use. 3、Taper hole of the chuck is connected with the thread hole, which is easy to disassemble and install, and not easy to fall off during use. 4、The drill chuck can clamp the drill with a diameter of 1‑13mm, with strong clamping force and strong practicability. 5、This self-tightening chuck is mainly used for clamping drill bits, and is often installed on small bench drills or electric hand drills. Specification Item Type: Drill Chuck Model: 1/32-1/2 JT33 Material: 40CR Applicable Scene: Small bench drill or hand drill Clamping Drill Diameter: Approx. 1-13mm / 0.04-0.5in Purpose: Clamping the drill bit Package List 1 x Drill Chuck