Enhance your spin, maximize your distance and accuracy, and give your elite thrower elite equipment with the Cannon Sports Allow Rim IAAF Official Discus. IAAF certified, the discus is the official disc for elite high school, college, NCAA and Olympic track and field athletes. Discus produces an ultra-high spin rate to maximize distance and enhance accuracy, and with its corrosion resistant rim and high impact resistant ABS side plates, the alloy rim disc is sure to give you long lasting, durable use. Perfect for high level training, practice, and competition, the disc is the must-have piece of equipment for any high-level athlete. Train and perform like the best with the Cannon Sports Alloy Rim IAAF Official Discus. Available in a variety of sizes. Rim Weight 2kg = 85%: 1.6kg = 83%: 1kg = 80%.