Engineered for optimum performance in multiple materials, Power Pro one screws are the one screw you'll ever need. Developed to outperform and replace standard wood, sheet metal and concrete/masonry screws, the one screw program simplifies your tool box by using a single, innovative, engineered screw design to satisfy projects that fasten into wood, metal, concrete, drywall and plastic. The bronze epoxy coating is recommended for exterior projects and treated lumber. The hex washer head design and star drive are perfect for high drive torque and large bearing surface applications. Manufactured with spiral flutes, serrated hi-lo threads and a three-sided pyramid point, no pre-drilling is required in wood, drywall, plastic or metal up to 20 ga thick. Concrete and masonry applications require a pre-drilled a hole, see product packaging for pre-drilling instructions. Each package includes a free durable pro-stik star driver bit.