from the manufacturer
hulkfit iron plates come in 2. 5lb, 5lb, 10lb, 25lb, 35lb, 45lb weight increments across 1in and 2in hole diameters.
iron plates may be used without or with a barbell to amplify your exercise routine. Use with a barbell for curls and bench press or without a barbell for floor presses, deadlifts and weighted situps.
manufactured of solid cast iron with a machined hollow and an enamel end to enhance durability