First-class Material: Made of high quality Tungsten Steel. Suitable for processing on wood, steel, iron, stainless steel, alloy steel, carbon steel, copper, aluminum & other metals, and jade, marble, bone, etc. Widely Application: All burrs with 1/8" (3mm) shank, fit for most rotary tools and die grinders. For example: Fit for Dremel Tool, fit for Proxxon Tool, fit for Mister Tool and many others. Ideal for DIY, crafts, hobbies, home repair, jewelry, lapidary use, modeling, and so much more. 10PCS Rotary Burr Set Includes: Ball, Nose, Cone, Cylinder, Needle point, Pointed tree, Oval and Tapered, etc. Meet most of your drilling needs, suitable for DIY woodworking, carving, engraving, and polishing, chamfering, grooving, reaming, hollow, beveling. Long Life Using: Our Double Cut Carbide Carving Bits are easy to use, safe and reliable. Durability is 10 times higher than high speed steel tools and more than 200 times higher than the small grinding wheels. Portable Packaging: 10pcs metal rotary burrs set are packed in a plastic box with separated slot, easy to use and store, no need to organize always keep neat.