With a rim weight of 85%, this is a preferred discus of top class throwers. Used in 2005 Pan Am Games and Asian Athletic Championships 'XPT' side plate technology 85% stainless steel rim weight Affords top throwers more flexibility in technique and release Discus Selection Chart High School Girls High School Boys Range Rim Weight Range Rim Weight 100' to 125' 70% to 73% 100' to 130' 70% to 73% 120' to 150' 73% to 75% 125' to 150' 73% to 75% 140' to 160' 75% to 80% 145' to 160' 75% to 80% 150' to 165' 78% to 85% 155' to 170' 78% to 85% 160' or more 85% to 89% 165' to 180' 85% to 89% 175' to 190' 85% to 90% 190' or more 88% to 91% Discus Competition Specs Women, High School plus 1 kilo. High School Boys 16 kilo. CollegeMasters Men to age 49 2 kilo. Intl' Junior Men 19 Under 1.75 kilo. Men 50 59 1.5 kilo. Men 60 plus 1 kilo.