Virtually indestructible, all OPB Cast Iron Olympic Plates are machine bored for a precise fit. Black satin enamel finish for an exceptionally strong and durable product. Whether you’re looking to trim up, slim down or build the muscularity of a professional bodybuilder, the OPB Cast Iron Olympic Plates are the perfect choice for you. These plates are constructed from solid cast iron and coated with a black satin enamel finish that makes them tough and rust-resistant. Set includes: (2) OPB45, (2) OPB35, (2) OPB25, (2) OPB10, (4) OPB5, and (2) OPB2.5 Black enamel finish Olympic plates are mchine bored for a precise fit Olympic style plates have a 2” diameter center Set includes: (2) OPB45, (2) OPB35, (2) OPB25, (2) OPB10, (4) OPB5, and (2) OPB2.5 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" Exercise Focus: Multipurpose Application/Use: Commercial Application/Use: Residential Type: Olympic Weight Plates Product Data Sheet: Download Product Data Sheet