[Special Design]: This keyless chuck has a self-tightening design, which makes the chuck more reliable when tightening the tool [Save Time and Effort]: The inner thrust bearing helps convert the torque applied by the handle into a greater clamping force [Easy to Use]: The self-tightening chuck adopts a more ergonomic design for easy operation and quick change [Fitment]: The hand drill chuck is suitable for 1050W or more impact drills [Specification]: Connection Size: 1/2-20UNF; Clamping Range: 2-13mm/0.04-0.51in; Diameter: 43mm/1.69in Features: The chuck can hold the drill bit firmly and sturdy, not easy to loosen. Durable and has a long service life, suitable for long-term work. Easy to install and disassemble, more convenient and labor-saving. Wide range of collet sizes from 2 to 13mm, suitable for many kinds of drill bits. Keyless and self-tightening type design is more in line with human engineering. Specification: Diameter: 43mm/1.69in Length: 71mm/2.8in Connection Size:
