8" D-4 BACKPLATE FOR 3 & 6 JAW ZERO-SET CHUCK (3900-5607)

8" D-4 Back Plate for 3 & 6 Jaw Zero-Set Chucks Designed for the easiest possible installation. Minimize overhang by using the Zero-Set recessed design. All Zero-Set back plates are interchangeable on the same size chuck. Shipping Weight: 13 lbs