CO-CP Tool Hydraulic Lathe Work Holding Chuck. Back Mounting Plate Center Diameter: 3 O. Back Mounting Plate Outer Diameter: 8 O. Draw Bar Thread: 3/4-16 threads. NOTE: Used, comes as shown in the photos, has small scratches, scuff marks, and various other signs of previous use. This item is in the category “Business & Industrial\CNC, […]