Discraft 175 gram Ultimate Frisbee Ultra-Star disc The 175 gram Ultra-Star (10.75" diameter) is the official disc of the Ultimate Players Association and the choice of teams worldwide for casual, league, and tournament play. Since its introduction in 1981, the Discraft 175 has set the standards of quality, consistency, and performance necessary for the demanding needs of the sport of Ultimate. LONGER DISTANCE: The Discraft 175 Ultra-Star flies further than any other disc in its class. SUPERIOR STABILITY: The Discraft 175 Ultra-Star maintains your release angle longer than any other disc designed for both throwing and catching. ADVANCED AERODYNAMICS: With its contoured grip and aerodynamic engineering, the Discraft 175 Ultra-Star is easier to throw at all levels of play from a throw on the beach to a World Championship Ultimate match.