WITTMAN TOOLS INC. VINTAGE NURL SIZING MACHINE ACCESSORY, CIRCA 1975, PART

WITTMAN TOOLS INC. VINTAGE NURL SIZING MACHINE ACCESSORY, CIRCA 1975, PART.  This is a used accessory that has WITTMAN TOOLS INC stamped on its side.  It has a round .558" x 3-1/2' shank.  The head measures .757" round on 2 sides and .658" flat on 2 sides.  The flat sides have a small slit in the middle that can be slightly expanded and contracted with a set screw about 1' from the top.  The end of the tool hass 2 diagonal round knurls that measure .405" and rotate horizontaly on pins on either side of the middle slit.  We do not have any further information on the accessory part.  The only reference to WITTMAN TOOLS INC that we can find is in an Amazon listing for a catalog ""k-2, Wittman Nurl Sizing Tool Sales Catalog Page Unbound – January 1, 1975

by Wittman Tools - Automotive Specialty Tools (Author)".