Need a Spotter? Free weights on a bar: a classic, tried-and-true way to train strength and improve cardiovascular fitness. You bring the bar, we've got the weights. These Olympic-style plates feature a 2" machine-bored center hole and are cast from solid iron, finished off with a hammertone baked enamel coating. Practically indestructible, no chipping, no peeling. Perimeter ridges for quick and easy grip. Sold individually.