This small glass looks like a bar shot glass but it was made to sharpen old safety razor blades. The inside of the glass is lightly frosted which would facilitate the honing. You would hold a razor blade inside and move it around the inside surface, sharpening and honing the blade. The glass is approx 2" x 2" x 2" and it weighs under one pound at 0.10lb. The sharper is in a good, vintage condition with some color loss over the "G" for glass. Please see the images as they are part of the description.