Multifunction: 20 different cutters of the most commonly used types to meet different woodworking situations. Each cutter is shaped to fit different angles or situations. Suitable for carving, engraving, drilling, chamfering, grooving, reaming, shaping, hollowing. High Quality: Rotary cutter set made of high speed steel (HSS) and titanium coating for long life, good wear resistance, durable, faster cutting and high work efficiency. Save time and money. 【High Compatibility】With 3mm shank, length: 40mm, common sizes compatible with most engraving tools, rotary tools or grinders, such as Dremel, Apollo, Chicago and more. Widely Used: Used in processing various types of materials, including wood, plastic, ABS, PVC, acrylic or resin. Suitable for detail work such as home repairs, DIY crafts, building and sanding dollhouse furniture, model trains, buildings and airplanes. Note: The data is all measured manually, so there may be 1-3cm error due to differences in light and display, there may