1. [20 pieces of rotary drill bits] 20 different wood carving drill bits are set in one set, and different shapes are suitable for different processing, suitable for woodworking, carving, drilling, beveling, grooving, hinge, shaping, hollow and other carving operations. 2. [] 20 HSS engraving rotary drill bits are made of high-speed steel, sturdy and , with good wear resistance and heat resistance. 3. [General compatibility] HSS cutting burr bit set with 1/8 inch (about 0.3 cm) handle, length: 1.57 inch (4 mm), suitable for most small rotating tools. Help you complete tasks easier and faster to meet most of your woodworking engraving needs. 4. [Wide use] Suitable for detailed operations, such as wood carving drill bit carving, wooden furniture gadgets or miniature buildings. Valuable additions for DIY woodworking and wood carving drills! Widely used in different types of materials, including jade, wood, PVC, plastic, foam, etc. colour: silver Material: high-speed steel Package Contents: 20 x HSS rotary bits Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.