The Viper Dead On dartboard features a staple-free bullseye which helps prevent bounce-outs. It's constructed from self-healing sisal bristle fibers compressed together, providing unsurpassed durability. The spider utilizes thin, rounded galvanized wires that allow darts to slide off the spider and land in the target area. The Viper Dead On is an official tournament size board, measuring 18" in diameter and 1.5" D. A movable number ring further extends the dartboard's life. This dartboard accommodates both steel tip and soft tip darts and includes mounting hardware.