Engineered for optimum performance in multiple materials, the PowerPro One Screw will be 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. 133 Pack Recommended for exterior projects and treated lumber Premium Bronze Epoxy Coating provides 4 layers of corrosion protection Every One Screw is manufactured with spiral flutes, serrated hi-lo threads, and a 3-sided pyramid point Comes in an innovative plastic package that is reusable, recloseable, and stackable for post purchase use Flat Head design provides clean countersinking in wood and is ideal for wood-to-wood, wood-to-metal, and wood-to-masonry projects Pre-drilling is not required in wood, drywall, plastic, or metal up to 20 gauge thick The T25 Pro-Stik Bit included in pack provides stable driving - no wobbling Concrete and masonry applications require a pre-drilled a hole, see product packaging for pre-drilling instructions. Specifications: Thickness: #10 Length: 1-1/4" Thread Style: Saw tooth Head Type: Flat Drive: Star Point Type: Self-drilling Use Location: Exterior Materials Fastened: Universal Material: Steel Color/Finish: Bronze