6-Jaw 5 inch Lathe Chuck Self-centering Hardened Chuck 125mm K13-125 Adjustable. 6-jaw design lathe chuck: diameter: 125 (mm) internal jaw clamping range: 2.5-40 (mm), external jaw clamping range: 38-110 (mm). Single claw-each claw can be adjusted individually to accommodate rectangular and irregularly shaped workpieces. High-quality materials-The main body of the chuck is made of high-quality cast iron. All guide rails and bearing surfaces are precision machined. Durable two sides are polished and hardened. Scope of application: The chuck is suitable for general lathes, economical CNC lathes, grinders, milling machines, drilling machines and machine tool accessories and other machine tools and accessories. 1X self-centering chuck body. Jaw material: Hardened steel. Maximum speed: 3000 r/min. Clamping range A-A1: 2.5-40mm. Interference range B-B1: 38-125mm. Made of high quality material, Durable. Made of high quality material.