Description:? 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? 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. What’s Included: 1X self-centering chuck body 6X lower jaw 1X safety chuck 3X fixing screw Specifications: Model: K13-125 Jaw material: Hardened steel Maximum speed: 3000 r/min Lower jaw: 6 lower jaw Power supply: manual Inner claw: Clamping range A-A1: 2.5-40mm Interference range B-B1: 38-125mm.