【Cutter Size】Shank diameter: 8 mm, Total length: 78 mm, Cutting height: 6.35 mm(1/4 inch), Tooth depth: 12.7 mm(1/2 inch). 【Good Quality】Cutter blade is subjected to high-frequency welding technology, and the cutter body is made of Made of very hard tungsten steel, which features high hardness, strength and sharpness. 【Unique Design】High hook and shear angles allow the cutters to cut smoothly into the material, gives a clean and simple construction, 3 flute wood cutters, prevent the formation of sawdust. 【Practical Tool】Simple construction, easy to use. Grooving cutter used to produce doors, chests and furniture, and in fact any form of construction that requires grooves for panels. Ideal choice for professionals and hobbyists. 【Application】Router bit suitable for wood, MDF, chipboard, plywood. Avoid cutting ferrous metals and other materials such as steel, iron, sand, etc.