The Jonny Clayton Premier League SE 90% by RED DRAGON is a dart set with barrels of 90% Tungsten and is the ultimate dart set from the famous darts player Jonny Clayton, specifically the Premier League edition. 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 6.80mm. 24G = Barrel Length: 50.80mm, Barrel Width 7.10mm.