Nodor Supawire 2 Regulation-Size Staple-Free Bristle Dartboard with Moveable Number Ring and Hanging Kit Regulation-size bristle dart board ideal for tournament, tavern, or home use Endorsed by the American Dart Organization for tournament use Complete staple-free SupaBull bulls-eye with improved scoring area SupaWire bands and dividers help minimize bounce-outs Measures 17.75 inches in diameter and 1.5 inches thick; 1-year warranty