General description Our HSS Step Drill Bit is crafted from high-speed steel, ensuring fast, comfortable, and friction-free drilling. It features a titanium coating that enhances resistance to corrosion, heat, and rust, extending its service life even under extreme temperatures. This versatile drill bit is designed for various materials, making it ideal for household repairs and light work. Technical specifications Material: High-speed steel Drilling 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 This step drill bit is suitable for drilling holes in plastic, copper, aluminum, and many types of sheet metal. However, it is not suitable for stainless steel. For optimal performance, it is recommended to pour water on the drill bit while in use to cool it down, which helps extend its lifespan. Other information Includes a small case for easy storage and carrying Double-blade design for faster and friction-free cutting