ApplicationGeneral lathe, economical CNC lathes, grinding machines, milling machines, drilling and machine accessories etc..SpecificationsJaw: 4 JawModel: K12-100High precision: ≤0.05mmMax RPM: 4200Color: SilverMaterial:Hardened SteelApplication: for CNC Drilling Milling MachineLathe ChuckThickness: 2.165\"(55mm)Center Hole: 0.866\"(22mm)Bolt Circle Diameter: 3.307\"(84mm)Runout: 0.003\"Internal Jaw Clamping Range (A-A1):0.079-1.181\"(2-30mm)Internal Jaw Jamming Range (B-B1):1.181-3.543\"(30-90mm)External Jaw Clamping Range (C-C1):1.181-3.149\"(30-80mm)Package Includes1 x Self-Centering Jaw3 x Inside jaws3 x outside jawslarge1 x safety chuck key3 x mounting boltsSpecificationJaw: 4 JawModel: K12-100High precision: ≤0.05mmMax RPM: 4200Color: SilverMaterial:Hardened SteelApplication: for CNC Drilling Milling MachineLathe Chuck:Thickness: 2.165\"(55mm)Center Hole: 0.866\"(22mm)Bolt Circle Diameter: 3.307\"(84mm)Runout: 0.003\"Internal Jaw Clamping Range (A-A1):0.079-1.181\"(2-30mm)Internal Jaw Jamming Range (B-B1):1.181-3.543\"(30-90mm)External Jaw Clamping Range (C-C1):1.181-3.149\"(30-80mm)Package Includes:1 x Self-Centering Jaw3 x Inside jaws3 x outside jawslarge1 x safety chuck key3 x mounting boltsNoticePlease feel free to contact us for whatever we can help.