6" Threaded Back Plate 1-1/2 x 8 TPI for 3 or 6 Zero Set Adjustable Lathe 202-6551 R$$Tools & Hardware Other

Back plate needs to be machined in order to fit the lathe chuck Diameter: 6" Thread Size: 1-1/2-8 Shoulder Diameter: 3.169" Bolt Circle Diameter: 5.34"; No. of Bolt Holes: 6