The Shark Pro B 90% Tungsten from BULLS is a dart set with 90% Tungsten barrels. The Shark B 90% darts have a shark grip over the entire barrel which is a lot finer than the Shark Pro A. Dart arrows. The Shark Pro B Dart arrows are made in 3 weights; 21-23-25 grams. The Shark Pro Darts are made in New Zealand, where high-quality darts come from. The dart set comes standard with the Bull's Shark Powerflite, the Simplex Medium Blue Shaft and the Bull's Steel Dart Points Black 35mm. Every official Bull's Shark Pro 90% Dart has the "Bull's Logo" laser engraving. The Shark 90% is also available in soft tip. 21G = Barrel Length: 50.60mm, Barrel Width 6.50mm. 23G = Barrel Length: 50.60mm, Barrel Width 6.60mm. 25G = Barrel Length: 50.70mm, Barrel Width 6.60mm.