[INTRODUCTION]: Reversible Finger Glue Joint Router Bit, Shank Diameter: 1/2" (12.7mm)]. Industrial grade router bits with high welding quality, stable quality, high efficiency. Provide more convenience for your daily woodworking. Cut in a smooth tooth width that produces clean, crack-free cuts. [MATERIALS]: Our router bits are made of solid hardened steel and C3 particle carbide. (C3 grade cemented carbide is the highest grade used in the router bit industry.) Precise product design creates smooth, detailed cuts for any level of sophistication. [PERFECT DESIGN]: Heavy-duty hardened steel body with anti-backlash design. Balance /- .003" tolerance (allows smooth operation at high speeds), C3 carbide tip - Particle grade provides increased strength and maximum resistance. [LARGE [USE]: The router bit tool can cut most materials, including: wood, MDF, particle board, plywood, paneling, cork, hardwood, etc. Suitable for hand-made drawers or other woodworkers, for edge-to-edge or end-to-end wood joints. Perfect for professionals and amateurs to choose. [USE OBJECTS]: Designed for laptop or desktop woodworking engraving machines, such as handheld and portable routers. Note: It cannot be used on electric drills and drills.