Collet Nut CHUCK CLOSER Adapter Back Plate 2-3/16"-10 Thread Hardinge Haas Yuasa #B

All stainless steel part

Major outside diameter = 4.5"

Minor outside diameter = 3.0"

Thread = 2-3/16-10

Has set screw for locking in place

Length of part = 3.25"

Comes as shown in pictures.