Viper Chroma Sisal DartboardUpgrade your game room with the Viper Chroma Sisal Dartboard. This 17. 75 professional quality steel tip dart board is made with self healing sisal fibers to ensure longevity. The scoring segments are separated by a triangular spider wire and the bullseye is staple free, increasing surface area and preventing bounce outs and deflections. The Viper Chroma steel tip dartboard features a removable number ring, just detach and rotate to reduce wear on the