Features:* Optimal Precision & Detailing: Made of sharp high-speed steel, you can easily carve woods much faster, leaving a smoother finish. Sturdy and durable.* High-performance carving knife: It is carved with ultra-fast vibrations. 3 to 5 times the engraving speed as hand-carved, these burrs are designed for faster wood removal, greatly improve your work efficiency.* Compatibility: the shank is 3mm/0.12 inch, so it can be compatible with most grinders and rotary tools when you finish, grind and shape your work.* Simple and easy to use: the engraving drill bit set is round, You just need to put the drill bit into the electric drill and repair, then use it directly. You can save two-thirds of the strength of ordinary hand carving.* Wide Application: Perfect for DIY handmade carvings, mainly for wood, furniture carving, antique floor carving, bonsai, toys, figurines, animals and other carving works. Specifications:* Type: Wood Carving Tools * Material: High Speed Steel * Color: Silver * Upper: 3mm/0.12 in * Size: 3*3mm, 3*4mm, 3*5mm, 3*6mm, 3*8mm (Approx.) * Quantity: 5 Pieces Package Contents:5 * Wood Carving Tool Note:1. The actual colors of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.