The Pro-Line 90% from WINMAU is a dart set with a modern and sporty dynamic combined with a classic streamlined design. With proven groove patterns, these darts are perfectly weighted and covered with our signature Onyx coating. This dart set comes in 6 weights; 21-22-23-24-25-26 grams. 21G = Barrel Length: 50.80mm, Barrel Width 6.30mm. 22G = Barrel Length: 50.80mm, Barrel Width 6.40mm. 23G = Barrel Length: 50.80mm, Barrel Width 6.70mm. 24G = Barrel Length: 50.80mm, Barrel Width 6.90mm. 25G = Barrel Length: 50.80mm, Barrel Width 7.00mm. 26G = Barrel Length: 50.80mm, Barrel Width 7.00mm.