This is simply a piece of tapering steel, used with a hammer for driving the heads of nails below the surface of the wood they are in. Some 3 or 4 sizes are needed to suit the various nails. The punch is held in the left hand, with the thumb and forefinger grasping the top, and the little finger encircling it below, while the middle and third fingers are placed inside it. Holes in the wood left by the punch must be filled with putty before painting is done. The punch is shown in Fig. 446.