The DEWALT Bi-Metal 2X Life Holesaws are designed for heavy-duty cutting in standard or deep cut applications. They are fitted with a quick-release mandrel that prevents lock up of the holesaw and enables it to be easily removed. The extra hard, variable pitch, high-speed steel teeth have an M3 steel cutting edge that provides extended holesaw life. They provide a 12.5mm deeper cut than standard bi-metal holesaws. Ideal for cutting holes in steel, stainless steel, brass, copper, aluminium, wood, plastic and other composition.1 x DEWALT Bi-Metal 2X Life Holesaw 19mm