Durable: Hardened solid alloy steel main construction with power coating finish for durability and longevity Make the job easier: Precision-ground YG8 tungsten carbide blade delivers clean, clean cuts accurate on all types of wood and excellent heat resistance Closed rolling roller for smooth, aligned operations with universal 1/4 inch shank fits all models Router Bits Usage: Perfect for edging, burring, graining and grooving in all woodworking projects for professional carpenters and hobbyists. All heat treated blades , with high concentricity and strong twist refused. High quality carbide blade with sharp cutting, smooth rotation, operating light. Mainly used for wood cutting, enigmatic, boring tenon and carving, etc. Suitable for chipboard, MDF board, hardwood and softwood. Specification: Bit Color: Red and Silver Tail Diameter: 6.35mm / 1/4&#34; Round Rod Material: 45# carbon steel, YG8 alloy Safety Instructions: 1. Razor blades permanently enclosed in a cartridge or housing with less than 2 mm of exposed blade. 2. The blade product is not used for persons under 18 years of age. 3. The item is only use for industrial cutting/engraving, non-hazardous item. Quantity and Cutting Size: Contains: < p>15*6.35mm Tail Router Bit