About this item 【Ellipse Shape】:Size: 2-1/4" Total length, 1/4" shank diameter, 1/2" head diameter. Customized Tungsten Carbide Rotary Burr Bits for Professional Users. 【Long Life】: Made of heat-treated Solid tungsten carbide YG8 that lasts 8 times working life Durability than HSS tool,Suitable for machining various kinds of metal material including ≤HRC65 hardened steel. 【Double Cut Design】The additional cutting edges allow for faster material removal, reduced loading, and a smoother surface finish. Double cut burrs providing better control and precision to ensure stable operation. It suitable for working with a variety of materials, including harder metals like steel and cast iron. 【Widely Applicable】: carving, chamfering, cleaning, contouring, cutting, deburring, elongating, engraving, grinding, meatalworking, milling, MRO, polishing, porting, sculpting, shaping, shaving, tooling, trimming, metal, wood and plastic, etc. 【Lifetime Product Warranty】:Professional factory quality assurance, quality assurance, so that you can use more worry-free, but if there is any dissatisfaction, please contact us at any time, we will refund or replace the full amount.