The Core XL T90 2 Green 90% from UNICORN is a dart set with 90% Tungsten barrels and is a straight model dart with ringed grip and green accents. This dart set comes in 3 weights; 20-22-24 grams. 20G = Barrel Length: 48.00mm, Barrel Width 6.30mm. 22G = Barrel Length: 48.00mm, Barrel Width 6.60mm. 24G = Barrel Length: 48.00mm, Barrel Width 6.90mm.