Body Solid OSB300S The OPB Cast Iron Olympic Plates are built to last, with a machine bored design for a precise fit. A black satin enamel finish adds extra strength and durability to this virtually indestructible product. Whether your goals are to tone, slim, or build like a pro, these plates are an excellent choice. Made from solid cast iron and coated with rust-resistant black satin enamel, they are designed to withstand even the toughest workouts. Set includes: (2) OPB45, (2) OPB35, (2) OPB25, (2) OPB10, (4) OPB5, and (2) OPB2.5, (1) OB86B Black Olympic Bar, and (2) OC06 Olympic Spring Collars Body-Solid OSB300S Key Features 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, (1) OB86B Black Olympic Bar, and (2) OC06 Olympic Spring Collars 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"