The Phil Taylor Power 8ZERO 80% from TARGET is a dart set with 80% Tungsten barrels and is a straight model with coarse rings in black and silver. This set comes in 5 weights; 21-23-24-25-26 grams. 21G = Barrel Length: 52.00mm, Barrel Width 6.35mm. 23G = Barrel Length: 50.50mm, Barrel Width 6.73mm. 24G = Barrel Length: 50.50mm, Barrel Width 7.00mm. 25G = Barrel Length: 50.60mm, Barrel Width 7.14mm. 26G = Barrel Length: 51.60mm, Barrel Width 7.14mm.