【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 bit with sharp tooth shape, durability and good stability.【Precise and Clean Cutting】Non-binding sharp edge design and duplex teeth ensure cleaner and smoother cutting with higher precision.The chip evacuation holes allow cutting waste to be disposed of in good time.【Superior Performance】The diverse and fine toothing ensures that the hole saw does not get stuck in the material and runs smoothly.Bi-metal hole saws have a greater number of cutting edges than carbide hole saws, resulting in a clean cut.【Wide Application】The bimetal hole saw is designed for drilling holes in sheet metal, wood, plastic, pipe, PVC and developed fiberboard.It is your ideal choice for DIY projects and home maintenance and repair.【Buy with Confidence】We offer a TWO YEAR warranty on hole saws.If you have any questions, please feel free to contact us, we will try our best to resolve them for you.(Please tighten the shaft properly and take necessary precautions when working with wood.)