Winmau Dual Core Green Zone Steel Tip DartboardWinmau Blade 5 Dual Core Green Zone steel tip dartboard was developed exclusively with the Junior Darts Corporation (JDC), and made from class leading Blade 5 Dual Core technology combined with easy fit Rota Lock technology. The easy to use handicap system enables players of all age, gender or ability to play. This is the most fun inclusive dartboard in the world. Dual Core Technology features lower compression at the outer core which reduces surface