【High-Quality Materials】The hole saw kit is made of high-quality bimetal. The main body is made of special flexible steel, and the teeth that cut the material are made of HSS. The bimetal hole saw drill bit with a sharp tooth shape, durability, and good stability. 【Precise and Clean Cutting】The non-binding sharp-edged design and duplex teeth ensure a cleaner, smoother cut with greater precision. The chip evacuation holes allow for quick removal of cutting waste. 【Superior Performance】The varied and fine tooth pitch ensures that the hole saw does not get stuck in the material and operates smoothly. Bi-metal hole saws have more cutting edges than carbide hole saws, resulting in a clean cut. 【Wide Application】The bi-metal hole saw is designed for drilling holes in sheet metal, wood, plastic, pipe, PVC, and fiberboard. It is your ideal choice for DIY projects and home maintenance and repair. Bi-metal Hole Saw Perfect for installing locks, knobs in doors and cabinets or drilling larger