This is a very nice side handle to fit certain smaller egg beater type hand drills that have a 5/16" diameter tapped hole in the side of the frame of the drill. This hardwood handle is in very good condition overall with a good finish on it. Very study, no cracks, good brass ferrule and threads. It measures 1.75" diameter x 1.75" long overall including the threaded rod. A hard to find replacement!