The Adrian Lewis Gen 4 90% from TARGET is a dart set with 90% Tungsten barrels and is a personalized dart set from renowned dart player Adrian Lewis. These darts come standard with: 3 Target Pro Grip Shafts and Target Vision Flights. This dart set comes in 3 weights; 22-24-26 grams. 22G = Barrel Length: 50.00mm, Barrel Width 6.30mm. 24G = Barrel Length: 50.00mm, Barrel Width 6.40mm. 26G = Barrel Length: 50.00mm, Barrel Width 6.70mm.