Earthquake Men Women and high School Girls 1 Kilo 83% Rim Weight Discus. Power Series - Blue Men women high school girls intermediate skill 1k track & field discus. IAAF certified excellence backed with 2 year warranty. 1k 1 kilo 1kg 1 kg 1 kilogram men women and high school girls track & field discus 83% Rim Weight. Distance rated to 170 feet. Perfect for Intermediate Throwers Power Series - Strength & Durability w/ high grade steel rim