Product introduction:【Standard lever sheet】Fits all Olympic barbells with 2-inch sleeves. Each plate boasts IWF standard in diameter and thickness varies by weight (thinner width than most comparable plates on the market, enabling more weight to be loaded on the bar.). 【Training essential product】 A good bumper plate set is the centerpiece for modern training. Perform Olympic lifts, squats, and deadlifts safely and confidently with our tough.[Natural material]] 100% high-density cast iron material, durable, low elasticity, can withstand repeated drops. protects any type of floor and your bar.【Design rigorous】Expertly designed stainless steel "hooked" insert that remains firmly seated, keep balance.【Weight optional]】Bumper Plates are available in 4 weights: 2x5KG, 2x10kg, 1x15kg, 1x20KG. Good for strength training, weightlifting, etc.