Eyech 10pc 1/4" Shank Tungsten Carbide Rotary Cutting Burr Die Grinder Bits Double Rotary Cutting Burr Fits for Carving, Polishing, Engraving and DrillingSpecification:Shank size: 6mm (1/4") ShankCutting Diameter: 6mm (1/4") Material: Tungsten CarbideFeature:These carbide rotary burr set, with 1/4'' shank is made from Tungsten Carbide. Cutting Diameter 1/4''.Double cut design which makes it more suitable for materials with relatively low density, such as wooden, plastic and aluminum.1/4" shank fit for most rotary tools and grinders.This die grinder bit set is easy to grasp and use, safe and reliable.The working life of these solid rotary burr is 10 times longer than high-speed steel and 200 times longer than grinding wheel.Packed with plastic storage case for safety storage and protection.The package include:10pcs Rotary Cut Burr