8” (200MM) Lathe Chuck 4 Jaw Independent Ground Hardened Lathing. Internal Jaw Clamping Range: 10-100 mm (0.4”-3.94”). External Jaw Clamping Range: 63-200 mm (2.48”-7.87”). Precision Tolerance: 0.05 mm (0.002”). Chuck Body Material: Cast Iron. Jaws Material: 40CR Steel. Bevel Gear Material: 40CR Steel. Pinions Material: 20CR Steel. Includes: 1 Lathe Chuck 4 Socket Head Screws 1 Chuck T Wrench. Unit Weight: 26.25 lbs Estimate Only. Unit Overall Dimension: 8”L x 8”W x 4-1/4”H Estimate Only. THANK YOU FOR VISITING.