Item Type: Reversible Glue Joint Router Bit Material: 45 Steel + Tungsten Carbide Application: Used for woodworking mortising and splicing or other woodworking Surface Coating: PTFE coating Shank Type: 1/4in Round Shank Package List 1 x Router Bit 1. Please avoid cutting metal and non wood materials, such as steel, iron and sand.2. The body of the milling cutter is 45 steel, please keep it away from water to avoid rust.3. Cannot be used for electric drills and drilling machines 1[T SLOT DESIGN] The reversible glue joint router bit is square tooth T slot design, suitable for woodworking mortising and splicing. 2[TUNGSTEN CARBIDE] The tungsten carbide blade can cut the material smoothly, and the cut is clean and free of debris. 3[EASY OPERATION] Can create a perfect joint with one cutting side facing up and the other cutting side down, easy to operate. 4[1/4IN ROUND SHANK] With standard 1/4in round shank, it can be used for desktop woodworking engraving machine. 5[45 STEEL BODY] 45 steel milling cutter body, with higher strength and better machinability, wear resistant and durable.