DESIGN: This ready-to-play dartboard set includes the Viper Razorback Dartboard and the Viper Guardian Dartboard Surround, black 17.75" professional-quality steel tip dart board made with high-grade self-healing sisal fibers to ensure it can handle anything you throw at it The scoring segments are separated by a razor-thin spider wire that is 100% staple-free to maximize surface area and prevent bounce-outs and deflections The Viper Guardian easily mounts onto your Razorback Dartboard without any extra hardware, keeping your wall free of extra holes Simply mount it on your dartboard and you're ready to go Includes two sets of starter darts, a throw line, and a measuring tape to make sure everything is setup properly