General description Our CSPARKV 5 Pcs High Speed Steel Engraving Drill Bit Set is designed for woodworking enthusiasts and professionals alike. Made from premium high-speed steel, these drill bits are extremely strong, sharp, and durable, ensuring a long service life. They are anti-corrosion and heat-resistant, making them ideal for various woodworking tasks. Technical specifications Material: High-speed steel Shank size: 1/8 inch (3mm) Sizes included: 3mm, 4mm, 5mm, 6mm, 8mm Usage These drill bits are suitable for a wide range of applications, including: Drilling Carving Engraving Grinding Creating deep grooves, V-slots, patterns, and curved lines They leave a smooth finished surface without damaging the wood, eliminating the need for retouching. Other information Compatible with Dremel and most rotary tools and grinders Ideal for DIY projects, hobbies, woodworking, modeling, chamfering, grooving, and boring