General description The HSS Step Drill Bit Metal 5-35mm is a professional-grade titanium cone drill bit designed for efficient drilling in wood, plastic, and metal. Made from high-speed steel, it offers fast, comfortable, and friction-free drilling. The drill bit comes with a compact case for easy storage and transport. Technical specifications Material: High-speed steel Step diameter sizes: 5 mm, 7 mm, 10 mm, 12 mm, 15 mm, 17 mm, 20 mm, 22 mm, 25 mm, 27 mm, 30 mm, 32 mm, 35 mm Usage Ideal for drilling holes in plastic, copper, aluminum, and various types of sheet metal Not suitable for stainless steel For optimal performance, pour water to cool the drill bit during use Other information Titanium coating provides excellent resistance to corrosion, heat, and rust Double-blade design ensures faster and friction-free cutting Scope of delivery: 1 step drill bit