CS1969 ,Not quite sure of the correct nomenclature yet.Have not found one in my search on the web or tool pat.For sure it's some form of drill bit.Information on item- HERCULES 15/16 HIGH SPEED. Letters W&B inside a diamond box,eleven and a half inch long. G09 stamped on side.has very sharp edge,top not damaged as if by a hammer.think's it must be used with a air hammer for rock or in a mine.With the condition,and sharpness,after lots of cleaning i don't think it was used much before it was lost.Found on old farm that is now lost to time itself. was told by an old timer that it was used for making holes in wood or logs for the old time wood nails.It would work for that application with a wrench,BUT one would have to have a HIGH SPEED wrist given the information on the item.Thanks for the intrest.Open to any information-HH-Jarman