Item Type: Self-Tightening Drill Chuck_x000D_ Model: 1/32-5/8 JT3_x000D_ Material: 40CR_x000D_ Applicable Scene: Small bench drill or hand drill_x000D_ Clamping Drill Diameter: Approx. 1-16mm / 0.04-0.63in_x000D_ Purpose: Clamping the drill bit 1This self-tightening chuck is mainly used for clamping drill bits, and is often installed on small bench drills or electric hand drills. 2Using high?quality 40CR material, and after quenching treatment, with high hardness and wear resistance. 3Chuck has self?tightening function, and the clamping force is large, which is convenient for locking and prevents the bit from slipping. 4The taper hole of the chuck is connected with the thread hole, which is easy to disassemble and install, and it is not easy to fall off during use. 5The diameter range of clamping drill bit is 1?16mm, which is suitable for all kinds of drill bit and has strong practicability.1 x Self-Tightening Drill Chuck