Cutter SizeShank Diameter: 8mm, Total Length: 78mm, Cutting Height: 6.35mm(1/4 inch), Tooth Depth: 12.7mm(1/2) inch). Good QualityCutter blade is subjected to high frequency welding technology, and the cutter body is made of super hard tungsten steel, which has high hardness, strength and high sharpness. Unique DesignHigh hook and shear angles allow the cutters to cut smoothly into the material, gives clean and simple construction, 3 tooth wood cutters, prevent the formation of sawdust. Practical ToolSimple construction, easy to use. Grooving cutter used to produce doors, chests and furniture, and indeed any form of construction that requires grooves for panels. Ideal choice for professionals and amateurs. ApplicationRouter cutter suitable for wood, MDF, chipboard, plywood. Avoid cutting ferrous metals and other materials such as steel, iron, sand, etc.