Product Description: Quantity: one set (5 pieces) Shank Diameter*Wick Diameter: 3*3mm, 3* 4mm, 3*5mm, 3*6mm, 3*7mm, 3*8mm. All shank dimensions are 1/8 inch (3mm), with a universal chuck, which makes them allows it to be compatible with most grinders and rotary tools for finishing, grinding and shaping your work with precision. Material: High-speed steelcommonly known as white steel.High hardness, anti-corrosion, heat resistance, sturdy and durable. Three-blade design: Precise centering for clean and precise milling, fast discharge of chips from the hole to the sides. HSSTEEL MATERIALWood engraving bit made of high quality high speed steel, which is very strong and sharp. Carving bit which is long life, anti-corrosion and heat resistant, and is both sturdy and durable. WIDE APPLICATIONWood carving tool mainly applied for engraving on wood and precision work on bird feathers, fish scales, and other crafts, such as crafting deep grooves, V-slots, curved lines and patterns. This carving tool can achieve a smooth and beautiful finished craft effect. It is ideal for DIY hand work. TRICUSPID ARC DESIGNExtremely sharp arc flute on three sides can quickly clear chips from the hole on all sides. sides and bring out a smooth finished surface without damaging the wood. It is a great tool for wood carving. SIZE DETAILSHead diameters of 3mm, 4mm, 5mm, 6mm and 8mm are available. Compatible with most mini rotary tools with a 1/8 inch (3mm) shank, as well as many others. Various sizes are available to meet your diverse needs. You will receive 5 wood carving tools along with a transparent case.