Discraft Ultra-Star Ultimate Frisbee 175 Gram Championship Sportdiscs-Black 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