1. 10 Pieces Rotary Burr Set 10 different deburring bits in one set. Each burr is shaped to suit various angles or situations, ideal for engraving, chamfering, beveling, plunging, reaming, and hollowing. 2. 10 Pieces HSS Router Bits 10 different types of the most commonly used router bits, including straight, trimming, V groove, beading, cove, slot cutter, and more—a engraving bit for diverse needs. 3. 10 differently shaped burrs and 10 various router bits of the most common types. Designed to meet different woodworking situations, they fulfill most requirements for deburring, grooving, carving, milling, engraving, and drilling. Made of speed steel (HSS) for long lasting performance and precise cuts, durable with wear resistance and heat resistance. 4. Compatibility 3 mm (1/8') shank, length: 39 mm (1.53'). These HSS carbide rotary files work with most rotary tools or die grinders (e.g., compatible with Wen, Dremel). A valuable addition to any woodworker's rotary tool collection.