The Jonny Clayton 90% from RED DRAGON is a dart set with 90% Tungsten barrels and is the ultimate dart set from the famous darts player Jonny Clayton. The detailed radial grooves run the length of the straight barrel. In short, a beautiful set with excellent quality. This personalized dart set comes in 2 weights; 22-24 grams. 22G = Barrel Length: 50.80mm, Barrel Width 6.60mm. 24G = Barrel Length: 50.80mm, Barrel Width 7.00mm.