Cosmo Darts – Discovery Label – Steel Tip – Scott Mitchell – Scotty Dog – 23g. These barrels designed by the team at Cosmo, in conjunction with Scott Mitchell feature rings to the rear of the barrel with a smooth front section. The 90% tungsten barrels also have a small scallop with milled cuts into it. Pack contains: 90% tungsten barrels, Fit Shaft Gear and Fit Flight AIR.