TSUNAMI Discus 1k POWER Series - Blue Beginner men women and high school girls 1 kilo track & field discus. Official Weight 1k track & field beginner discus for Men & Women. High school, College, and Masters. Power Series - Strength & Durability w/ high grade steel 73% rim weight Perfect for beginners developing spin positioning and release. Excellent for building strength and technique. 1k, 1 k, 1kg, 1 kg, 1kilo, 1 kilo, 1 kilogram Reach your throwing goals with this quality 1 kg track & field discus. A Coaches favorite.