Another first from Winmau offering the latest, most refined triangular wiring system Geared to the modern game at the advanced level Dramatically improved durability and playability featuring high tensile Dynamic Sector Wiring Tournament approved with a CNC precision-engineered staple-free bullseye and super-dense sisal base Official tournament bristle dartboard staple-free bullseye allows higher scores and fewer bounce-outs Endorsed by the British Darts Organization; ideal use with steel-tip Angled divider wire directs darts for true scores Constructed from self-healing sisal fibers tightly bound for maximum durability Removable number ring for easy board rotation and extended playing life; board size: 17.75 in. diameter x 1.5 in. Quality is never compromised on Winmau dartboards, and he only difference with the models available is how they are equipped with different playing features. A wiring system that is leaner, more refined and geared to modern dart. Every serious darts player is going to appreciate the quality of this board.