The Elite Competition Bumper Plates are designed to meet strict regulations for weight, durability, and performance to IWF standards for accuracy in competition settings. They feature easy-to-read weight indicators for quick adjustments and are available in pairs of 10 and 25 LB and sold individually in 35, 45, and 55 LB.Each plate is color-coded according to international weightlifting standards, making them easy to identify. Crafted with a durable steel core enclosed in a rugged rubber coating, these weight plates withstand even the most intense weightlifting sessions - and have a low bounce rate for more control over your barbell during overhead drops. Raised edges ensure a reliable grip for easy handling and allow for a wide variety of additional exercises, including weighted sit-ups, bent-over rows, squats, lunges, and presses.With a 50.6 +/- 0.2mm collar opening and a 360mm diameter for the 10 LB plates, and a 450mm diameter for the 25, 35, 45, and 55 LB plates, these bumper plates fit all standard 2" Olympic barbells, making them perfect for both home and commercial gyms.