VEVOR 6-Jaw Lathe Chuck, 6 Inch (160 mm), Self-Centering Chuck with D1-4 Cam Lock Backing Plate, 0.12-5.71 in (3-145 mm) Clamping Range with T-wrench Screws, HT300 Material, for Wood Metal LatheStable and ReliablePrecision MachiningMultiple UsesWide ApplicationHigh HardnessSimple OperationOuter Diameter: 6 in / 160 mm,Product Type: 6-Jaw Lathe Chuck with Backing Plate, Separate Jaws,Inner Diameter: 1.57 in / 40 mm,Item Model Number: K13-60A?? D1-4??,Item Dimensions: ??6.3 x 4.53 in / ??160 x 115 mm,Internal Jaw Clamping Range: 0.12-6.3 in / 3-160 mm,External Jaw Clamping Range: 1.97-6.3 in / 50-160 mm,Net Weight: 24.47 lbs / 11.1 kg,Main Material: HT300 Ideal for Most Lathes: Whether you’re working with metal, drilling, or milling, our lathe chuck will enh.