[INTRODUCTION]: 3-Tooth T-Shaped Rain and Tongue Router Bit Sets. Shank Diameter: 1/2''(12.7mm); Tooth Width: 1/2''(12.7mm); Tooth Depth: 1/2''(12.7mm).Provide more convenience for your daily woodworking. Cut in a smooth tooth width that produces clean, crack-free results.[MATERIAL]: Our router bits are made of solid hardened steel and C3 grain carbide. (C3 grade carbide is the highest grade used in the router bit industry). Precise product design creates smooth, detailed cuts that are suitable for all levels of complexity.[PERFECT DESIGN]: Hardened steel body with anti-kickback design. Balance tolerance of +/- 0.003" (allowing smooth operation at very high RPMs). 3 C3 Carbide Tipped - Micro-grain grade provides maximum strength and durability.[WIDELY USED]: The router bit tools can cut most materials, including: wood, MDF, particle board, plywood, paneling, softwood, hardwood, etc. Suitable for hand-making a drawer or other woodworking, can be used to join wood from edge to edge or end to end. Perfect choice of professionals and hobbyists.[Where to Use] Designed for laptop or desktop woodworking engraving machines, such as handheld and table-mounted CNC routers. Note: It cannot be used in electric drills and drills.