The Overdrive 90% from WINMAU has a beautiful Vetalic design and finish that exudes quality. Beautifully sharp lines and triple machined rings, these darts offer tour-level playability and finish to ignite anyone's game. This dart set comes in 4 weights; 22-23-24-25 grams. 22G = Barrel Length: 50.80mm, Barrel Width 6.35mm. 23G = Barrel Length: 50.80mm, Barrel Width 6.60mm. 24G = Barrel Length: 50.80mm, Barrel Width 6.60mm. 25G = Barrel Length: 50.80mm, Barrel Width 6.80mm.