Daggerz™ brand sheet metal screws are a high quality screw designed for metal-to-metal fastening jobs. The sharp piercing point penetrates through metal easily and eliminates the need for any pre-drilling. These screws work excellent for attaching sheet metal to light gauge metal and anchoring fixtures into light gauge metal. The proprietary bronze Dagger-Guard coating passes the 1000 hour salt spray test and provides excellent corrosion resistance that's suitable for exterior applications.