These cutters are made of high speed steel for high hardness, high abrasion resistance and high heat resistance. There are a total of 5 pieces of single cut cutters of different shapes that you can use for various purposes. The 1/4 inch hex shank is suitable for many electric or pneumatic tools and machine tools. This set of cutters rotary cutters could be used on aluminum and iron materials. Widely used for carving, shaping and removing sharp edges, burrs and excess material. Features:< /p> These cutters are made of high speed steel for high hardness, high abrasion resistance and high heat resistance. There are a total of 5 pieces of cutters to unique cut in different shapes that you can use for various purposes. The 1/4 inch hex shank is suitable for many electric or pneumatic tools and machine tools. atic. This set of rotary cutters could be used on aluminum and iron materials. Widely used for carving, shaping and removing sharp edges, burrs and excess of material. Features: