The @501 Black 90% from BULLS is a dart set with 90% Tungsten barrels. The @501 Black 90% are beautifully shaped darts with unprecedented pyramid grip! These barrels are available in 3 different weights: 22-24-26 grams. 22G = Barrel Length: 50.60mm, Barrel Width 7.00mm. 24G = Barrel Length: 50.50mm, Barrel Width 7.00mm. 26G = Barrel Length: 50.50mm, Barrel Width 7.60mm.