Midwest Snips 13" Replaceable Blade Snip is used to cut all lightweight sheet materials including vinyl siding, roofing materials, and up to 24 gauge steel. It features a light in weight magnesium handle and a full 3-1/3" cut length. The blades are high quality carbon steel and are economical and easy to replace. The Midwest Snips 13 inch Replaceable-Blade Combination Snips are designed to cut curves and circles in vinyl, plastic, sheet metal and other materials. Their handles are crafted with cast magnesium for strength and are contoured for a comfortable fit. Their blades feature replaceable, high-carbon, hollow-ground steel cutting edges with a 6-degree angled cutting surface.