Our saw blade is made of strong , which is and , greatly improving the work efficiency and provide perfect cutting results. The shank is made by heavy duty carbon steel with high durability, hardness and smooth .The cutter blades are suitable for most electric drills, and they are very easy to install and replace. This kit can be used for fast, precise and efficient cutting work, ideal indispensable tool for professionals.These cutting blades can fit most electric drills, with a 1/4-inch hex handle, which can fprovide added strength when use. Can be used as inside pipe cutter for pvc pipe, plastic, and soft metals like aluminum and copper, not for hard metals.Please wear gloves and goggles when use, avoid , and keep blade speed under 20,000 RPM. Keep away from children.Colour:BlackMaterial:steelPackage Contents:1set * cutting wheel for drillOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.