Ultimate Brass High School Boy's 12 lb 102 mm Diameter Track & Field Shot Put. High school boy's 12 lb brass track & field shot put. Unsurpassed Quality Machine Finish 12 lb Brass Shot Put Our Most Popular Brass 12 lb (102mm) Shot Put Calibrated for Certified Weight Ultimate, Advance, Elite, Professional Shot Put America's Highest Rated Brass 12 lb High School Boy's Shot Put