Drill & Boring Machine Chuck Adapter
Offering this nice clean old auger drill adapter for the old style drilling and boring machines. It is set up for 1/2" straight diameter shank drill bits, and has a 7/8" diameter 15 threads per inch left hand threads on the other end. I don't know what machines it will fit, but a handy tool if you don't have one for yours! This one appear to be new old stock from a box of extras in a master craftsman's workshop!