Shars 6″ Fully Machined Threaded Back Plate 1-1/2-8

Shars 6″ Fully Machined Threaded Back Plate 1-1/2-8 for 3 or 4 Jaw Self Center Chuck 202-6109 S. Fully machined back plate can be mounted onto 4″3 jaw or 4 jaw self centering and independent lathe chuck (p/n 202-5,202-5).