The US PRO 5pc Tungsten Carbide Rotary Burr Set is designed for high-performance cutting in a variety of materials including metals, plastics, and wood. Each burr is individually boxed for convenience and protection. Made from premium YG8 tungsten carbide, these burrs offer exceptional hardness and durability. Features : Material : YG8 Tungsten Carbide Hardness : HRA 89-91 Shank Size : 6mm diameter Shank Length : 45mm Construction : Silver braze for optimal hardness and concentricity; sintered in a pressure furnace for minimal volatilisation Contents : Type B : Cylinder end cut - 8 x 20mm Type D : Ball shape - 8 x 7mm Type E : Oval shape - 8 x 13mm Type F : Tree with radius end - 8 x 20mm Type G : Tree with pointed end - 8 x 20mm Brand : US PRO