Good used straight shank spade drill holder. Mfg not marked - looks like AMEC. Shank - approx 1.997 no flat.
Body - approx 3 3/4" dia x 10" OAL. Will accept 11/16 thick blade.Shank has been turned down to approx 1.997 - T. No flat so they were gripping it in a collet?