If you are doing woodworking for wooden floors and making the tongue and groove joints on thinner wood, this is a great choice. This is a professional tongue and groove router bit for handcrafting parquet flooring or other woodworking. You can use the router bit to create an interlocking joint for wooden floors, and these joints have much more surface area and much better strength. Features: new and high quality, perfect for making strong, seamless tongue and groove joints. Industrial standard tongue and groove router bit with 1/4" shank. Made of 45 high carbon steel and alloy, very nice and clean miter lock joints. Used to make joggle joints when joisting wood floors. Great tool that produces perfect corners for using the tongue and groove router bit to join boards. Specification: Color: Yellow + Silver Material: 45 high carbon steel + alloy Blade width: 45mm / 1.77" Tooth width: 6.35mm / 1/4" Tooth depth: 12.7mm / 1/2" Process thickness: 13mm-19mm / 1/2"-3/4" Shank diameter: 1/4" Shank length: 40mm / 1.57" Total length: 65mm / 2.56", 75mm / 2.95" Design: Anti-kickback Item weight: 196g / 6.91oz Package Weight: 234g / 8.25oz Package Size: 11 * 9.5 * 5.5cm / 4.33 * 3.74 * 2.17in Package List: 1 * Tongue Router Bit 1 * Grooving Bit 2 * Storage Box