1.10kg black virginal rubber bumper plate 2.middle bore diameter:26.5mm, 28mm, 29mm, ... rubber bumper plate2.colour available 3. middle bore diameter:26.5mm, 28mm, 29mm, 31mm, 51.5mm4. weight setting ... CE certification8. 100% pure rubber ensure the weight plates won't hurt the floor9.various colour&various ... our factory is a manufacturer major in rubber weight plates, so we can offer much lower price11 ...