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. 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, metal 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. Color: silver Dimensions: shank diameter 3mm, total length 50mm, grinding head diameter 6mm Quantity delivered: one set (10 pieces) Note: Other items are not included here, other pictures are just to show the effect. Due to the differences between different monitors, the picture may not reflect the actual color of the goods. All products are measured manually, please understand the errors, thank you