Dartboards – Bulls Advantage Pro Trainer Dartboard – Thinner Doubles & Trebles – Premium Quality. Made to the specifications of the World Darts Federation. World patented embedded Staple free Steel Bands. Bounceouts virtually eliminated by unique high Technology. Based on the Advantage – The Official World Cup dartboard of the WDF for many years. Powder Coated Number Ring to reduce reflections. Quite simply a stunning board.