Cosmo Darts - Discovery Label - Steel Tip - Royden Lam - Rainbow - 22g. This Cosmo Royden Lam discovery label 90% torpedo shaped tungsten dart features a ringed design with a hint of razor grip in the design along with a rainbow coating to give it this unique look. They come complete with Cosmo Fit Flights and Fit Shaft Gear shafts and fit point plus dart points.