Multifunctional: 20 different router bits of the most commonly used types to meet various woodworking needs. Each bit is shaped to fit different angles or situations. Suitable for carving, engraving, drilling, chamfering, grooving, boring, shaping, and hollowing. High Quality: Rotary router bit set made of high-speed steel (HSS) with a titanium coating for long service life, good wear resistance, durability, faster cutting, and high work efficiency. Save time and money. 【High Compatibility】With a 3mm shank and a length of 39mm, these common sizes are 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 detailed work, such as home repairs, crafts, building and sanding dollhouse furniture, model trains, buildings, and airplanes.