Widely Application: Mainly used for kinds of wood carving and wood processing, DIY crafts, model making, home maintenance, etc.Available in drill bit diameters of 3mm, 4mm, 5mm, 6mm and 8mm.Smaller drill diameter for more detailed engraving.More beautiful and smoother work can be achieved when engraving bird feathers, fish scales and more craft details such as deep worked grooves, V-grooves, patterns andcurved lines. Tricuspid Design: Extremely sharp, flute type carving bits with three-sided curved surface, which quickly expels chips from the hole and leaves a smooth finished surface without damaging the wood, suitable for carving, engraving, grinding,drilling and more.For wood carving, these are excellent tools. Material: Made of high-quality high-speed steel, which is very strong and sharp, has a long service life, is anti-corrosion and heat-resistant, and is both sturdy and durable. Universal size: 3mm(1/8 inch) fits most rotary tools and drills.Highly compatible and easy to replace Complete your next wood carving projects, high work efficiency, perfect cutting effect, whether you are a professional craftsman or a DIY enthusiast, save money and time.Wood grinding tool mainly used for wood carving, model making and precision work.An essential tool for sculpture work.Engraving drill bit set with extremely sharp tricuspid blades that quickly discharges chips from the hole to the sides and leaves a smooth surface.The best gift for DIY lovers.