This is a good clean Yankee ratchet / spiral screwdriver No. 30A marked with several Patent date "DEC. 11. 1923, also clearly marked "NORTH BROTHERS YANKEE NO. 30A". Has a good driver tip adapter that is Yankee drive on one end and hex drive on the other, allows you to use common hex drives, and 3 hex bits also included as in the picture. The adapter is made in the USA, and features a lock ring that help secure the hex bit in place (use hex bits with the tiny corner notches only). At least one hex bits is a Philips No. 2 bit and the other is a No. 1 Phillips, all bits and the adapter are new, all in fine condition. About 96% of the nickel plating is intact, and about 95% stain and varnish intact on the handle, a few minor dings in the wood. This type spiral drill is not spring loaded (rapid return) in the spiral area drive area, works perfectly, as from the factory. This one is 16" long overall with no bit in place, fully extended, and uses the 9/32" diameter shank tips. We also sell other Yankee adapters separately at this website.