GRIND Fitness Cast Iron Weight Plates Molded out of solid cast iron with baked grey enamel for aesthetics. This will help prevent chipping during weight lifting and loading on and off of barbells. 2" center diameter hole to fit on all standard sized Olympic barbells. Raised and painted lettering and numbers to easily identify each weight plate. Available in different sizes. 2.5lb, 5lb, 10lb, 25lb, 35lb, and 45lb plates SOLD IN PAIRS