Speed Steel mini drill bit set for durable, precise drilling Material and performance: Made from speed steel for durability and efficient drilling performance, helping you complete tasks with less effort and fewer bit changes. Size range and versatility: 20 pieces in a variety of small sizes, from 3 mm down to 1.6 mm, to cover a range of drilling needs. Applications and compatibility: Suitable for woodworking drilling, electronic product , household repairs, and drilling on wood, plastic products, and circuit boards. Key benefits: Reliable metalworking quality with a compact assortment that delivers precise small holes for detailed work, while staying versatile across common materials used in home and hobby projects. Use scenarios: 1) Woodworking and crafts: drill small pilot holes in wooden parts for assembly or delicate furniture tweaks. 2) Electronics and plastic enclosures: modify or plastic housings and small components, or open pilot holes for mounting hardware. 3) Household repairs and hobby projects: handle small drilling tasks in wood and plastic around the home without swapping bits frequently.