ZFE 60mm Diamond Coated Saw Cut Off Discs Wheel Blades Rotary Tool Set Shank for 1/8"(3mm) Dremel Proxxon Rotary Tools Pack Of 10Pcs Ideal For Cutting: Gem stones, metal, glass, carbide and other hard material. With high hardness and wear resistance and excellent impact resistance. Suitable for use in carpentry and crafts. Ideal for Cutting Gemstones, Glass, Ceramics, Porcelain, Tiles, Carbide, Rocks, Aluminium and Copper. Material: Carbon steel,Each Sets With 2Pcs Free 1/8"(3mm) Diameter Shank