Black Rubber Discus - Official 2K is the one your athletes need for practice and official competition. It's the is ideal discus for fine-tuning the methodology needed to compete in this field event that was an Olympic sport for the ancient Greeks. Discus has been molded to the official weight and specifications for official competition. The thrower must learn the details of physics, momentum and trajectory in order to properly throw a discus. Equip your athletes with this Black Rubber Discus - Official 2K for training that will generate their maximum distance throw.