Ideal for edging, cutting, graining and grooving in all woodworking projects for professionals and hobbyists. (Please receive the promo code on the product page during checkout to get a free cheaper price.) Suitable for: It can be used to notch a wide range of materials including solid wood, MDF, board particles, plywood, etc. Easy to Use: Mainly used for wood cutting, coating, graining and grooving. Precise: The high-quality router ensures professional and ultra-precise machining of wood. Premium Quality: Heat-resistant yellow coating prevents the build-up of sawdust and resin, the sharp cutting edge would improve work efficiency and product quality. Product name: straight knife Product use: grooving Product material: 45 steel + tungsten steel blade The size is as shown in the figure (note: the product size may have an error of 10-15 wires).