Product description Size Name:1/4" * 1/2" * 1-1/2"- yellow Introduction: Suitable for hand held electric drill,stand motor-driven drilling machine and mobile ribbon type magnetism drilling machine. Cutters are sharp enough, to slice smoothly into stock producing clean, splinter free. Our bits are the preferred choice of professionals and hobbyists alike, simple construction and easy to opperate. This router bits set can be used to make face frames for cabinet doors, flat, even joints for flooring, wainscoting, panels, tabletops and other DIY projects.The cut is very clean and everything fit together perfect. Specifications: Body Material: Solid hardened steel Blade Material: Carbide tipped Color: Yellow/Blue + Silver All parameter you can see in the photos Shank: 1/4 inch Max Rotating Speed: 12000/min Please note: Tongue and Groove Set is suitable for woods, mdf, particle board, plywood compact panel. Please avoid cutting ferrous metal and non wood materials, such as: Steel, iron, sand, etc. Safety instructions: 1.The bladed product is not use for people under 18 years. 2.Please wear goggles and use ear protection equipment when working. 3.Avoid getting your body or clothes close to the tool when using.