Body Solid OPB Embodying unmatched durability, all OPB Cast Iron Olympic Plates are machine bored with meticulous precision. The black satin enamel finish enhances the strength and longevity of this exceptional product. Whether your goal is to slim down, tone up, or achieve the muscularity of a professional bodybuilder, the OPB Cast Iron Olympic Plates are the ideal choice. These plates are expertly crafted from solid cast iron and coated with a rust-resistant black satin enamel for unbeatable toughness. Body-Solid OPB Key Features Black enamel finish Olympic plates are mchine bored for a precise fit Olympic style plates have a 2” diameter center ITEM# DIA. WIDTH OPB2-5 6.5" 0.5" OPB5 8" 0.5" OPB10 9" 0.75" OPB25 11" 1.25" OPB35 14.5" 1.25" OPB45 17.5" 1.5" OPB100 17.5" 2.125"