Tungsten Carbide Steel Double Cut Rotary Burrs Set for Rotary Tool, 10pcs 1/8 inches Shank Fits Rotary Tool for Grinder Drill, DIY WoodWorking Carving, Metal Polishing, Engraving, Drilling\n\n-- \u3010TUNGSTEN CARBIDE STEEL ROTARY BURRS SET\u3011: These carbide rotary burr set is made from premium Tungsten Carbide Steel, sharp, sturdy and durable. Total Length: 45-50mm, Cutting Diameter 1/4'', Shank Length 35mm, Shank Diameter 1/8'' compatible with most rotary tools and die grinders.\n-- \u3010DOUBLE CUT DESIGN\u3011: The groove lines of these carbide rotary burr's head are crossed, Used on wood, iron, carbon steel, alloy steel, stainless steel, copper, aluminum, and other metals, and marble, jade, bone etc. With cross-slotted chip quickly, in the grinding and carving time.\n-- \u3010HIGH WORK EFFICIENCY\u3011: Processing efficiency is tens times higher than the manual file tool, and nearly ten times higher than the small grinding wheel with the handle. Basically the rotary burr set .