Features: - With wood carving and engraving drill set: create your own wooden craft and bring your masterpiece to life! - Just attach it to your drill and you are good to go! Convenient and easy to use that allows you to carve wood effortlessly, unlike traditional carving which can damage and dull your hands. - These burrs are designed to remove wood faster. It is made of sharp high speed steel, you can easily tear off the woods much faster, leaving a smoother finish. - Great for fine detailing, widely used for metalworking, tool making, modeling, wood carving, jewelry making, welding, chamfering, casting, deburring, grinding, etc. Specification: Type: wood engraving drill bit Material: steel Shank diameter: 3mm/4mm Head diameter: 3-10mm Quantity: 1 pc Package includes: Wood carving drill bits Notes: 1. Transition: 1cm = 10mm = 0.39 inch.2. The real color 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.3. Please allow slight manual measurement deviation for the data.