The Beadsmith Professional Quality Disc Cutter Set will cut corners/ oval slot neatly and easily. This is a great time saver from the old ways of cutting and sawing your own corners/ oval slot from sheet metal. The holes of the tool have been drilled, reamed, and honed in order to make fine and clean cutters. The set contains 4 punches and die. The tool can create 3 different size corners from 1/4", 1/2" and 1"Inch curves and 3/16" x 3/4" Inch Oval Slot Punch. The base measures 4-1/2" x 4" x 1-1/2" (114.3mm x 101.6mm x 38.1 mm). This tool is constructed from solid high-density and durable alloy steel. To use please remember to put on your safety glasses and place your tool on a sturdy durable surface. The tool is packaged in some oil for its protection. Wipe off the excess oil before starting. The tool should be on a rubber bench block or pad for support. Use a lubricant on the cutting edges of the punch to reduce friction and ensure a cleaner cut. Remember the flat side goes down and the bevel side is up. Place the soft sheet metal up to 20-24 gauge and thinner (such as aluminum, brass, silver and gold) into the slot and put the punch into the hole. Use a 1-2 lb copper or brass hammer and with a clean strong strike push the cutter through creating a nice crisp and clean corners/oval slot. This tool is ideal to create jewelry, artwork, crafts and more. The best part is that our cutter is easy to use. This tool makes the perfect gift — give your loved ones the extra boost they need to get them started on that hobby they've been planning to start. It's sure to be a unique gift to help them develop their creative and artistic talents. This tool is ideal to create jewelry, artwork, crafts and more.