Nail sets or nail punch sets are used to drive finishing nails beneath the surface of wood. They look a lot like chisels, but are unique in that they countersink nails so that they no longer stick out. If fact, most nails have a slight dent on their heads to allow for easy use of the nail set. Nail punches and nail sets come in kits that range from 2 to 27 pieces in a variety of lengths. They’re typically made of steel or steel alloy and have different types of grips depending on the manufacturer. Before you start drilling and hammering, make sure you have a center punch to mark the spot you’re going to drill at.