High Quality: The drill bit set is made of high quality tungsten steel, which is perfect for iron, steel, carbon steel, alloy steel, stainless steel, to copper, aluminum, etc. Applicable drill bit: The drill bit set is suitable for most rotary tools such as Dremel, Proxxon, Mister Tool, Einhell, etc. and the same type of machines. Tool holder diameter: 3 mm, cutting edge diameter: 6 mm, total length: 43.5 ~ 50mm Multifunction: The jigsaw drill can be used for cutting, chamfering, grooving, reaming, hollowing, etc. Processing efficiency is ten times that of manual sanding tools and nearly ten times that of small handle wheels Wide range of applications: Rotary wheel can be used for engraving , milling soft materials such as softwood, plastic, etc., and the surface is smooth after engraving. Portable: The rotary grinding wheel is packed in a portable box, no need to keep the Order Product Description Pack of 10 Tungsten Carbide Rotary Drill Bits for Dremel Rotary Tools, Grinders, Metal Drilling, Engraving and Polishing Features: Material: tungsten steel. Shank: 3 mm. Head: 6 mm. Total length: (43.5 50) mm. Quantity : 10 pieces. Features: Various shapes and sizes: sphere, cone, round cylinder, flat top cylinder, cone. 2. Cleaning of cuts, lines and welds in foundry, forging and welding. 3. Highly recommended for jewelers, gemstone use, hobby, crafts, styling, home maintenance, etc. 4. Very suitable for filing glass, ceramics, tiles, bricks, plastic, wood, fiberglass, stone, carbide, gold, platinum, silver, metal and all that has a hard surface. 5. Suitable for polishing metals and plastics. Can be used with most power tools. Many uses: 1. Cleaning of cuts, lines and welds, and cleaning of forgings and welds. Finishing of various metal molds. 2. The passage of the finishing turbine. Various chamfered, round and grooved mechanical parts. 4. The surface finish of the inside hole of the mechanical part. 5. Processing of various metal and non-metal sculpture. Content: 10 Tungsten steel rotary knives Note: Due to manual measurement, please allow 0 difference at 1 cm. Thanks for understanding. The monitor calibration method is different. The color of the product shown in the photo may be slightly different from the actual product. Please refer to our size before ordering Delivery quantity: 1 set of 10 pieces