Carbide grinding head This carbide rotary cutter set is made of tungsten carbide. Overall length: 43-50 mm, cutting diameter 6 mm, shank diameter 3 mm, shank length approx. 35 mm. Double cut design The crossed grooves on these carbide rotary file heads make them more suitable for materials with relatively low density, such as wood, plastics and aluminium. Adaptability The 3mm diameter shank fits dremel and most small rotary tools with a 3 jaw chuck for precise centring. Ideal for your DIY woodworking, carving, engraving and polishing. Long working life Packaged in a plastic case for safe storage and protection. These solid rotary burrs last up to 10 times longer than HSS and 200 times longer than grinding. Product details 1. Material: Tungsten Carbide 2. Cut pattern: double cut 3. Suitable for: drilling, metal engraving, carving, polishing 4. Grain size: 120 (mesh) 5. Outside diameter: 6 (mm) 6. Shank diameter: 3 (mm) 7. Length: 50 (mm) ) 8. Recommended speed: 25000-50000, maximum speed 70000. 9. HRA85 and above 10. Quantity: 10pcs/Set in a storage box Features 1. for machining various metals (including hardened steel) and non-metals (e.g. marble, jade, bone) 2. Hardness up to HRA85 3. Easy to use: even cutting movement from right to left 4. high productivity, which reduces labour intensity 5. High precision mould cavities can be produced 6. simple and easy to use 7. Widely used for pneumatic or electric tools. Packing list. 10 * Carbide rotary burrs Caution. Due to monitor differences, the actual colour will deviate from the picture. As it is measured by hand, the size will have a 5-10mm error.