Outstanding lifespan in wood! The tapered spiral groove allows for drilling through hard materials without jamming. When drilling through multi-layered building materials, you need durable drill bits that won’t get stuck or stop when you hit a nail. With these drill bits, you can penetrate formwork and layers of metal sandwich panels. PRO Wood HSS installation drill bits are just right for this task. They are an excellent choice for construction workers and installers who need to drill holes in various building materials like metal sandwich panels and hardwood. The drill bits are made from high-speed steel (HSS) to ensure strength and heat resistance. They are long enough to penetrate multiple layers of building material and feature a tapered groove that prevents jamming even in damp wood. You can use them for all formwork, interior construction, plumbing, and electrical installation work.