colorful rubber bumper plates: 1.material:cast iron 2.spec:5/10/15 ... ,blue,green,black 4.OEM service rubber bumper weight plates:1.material:natural rubber 2.color:black,green,red, ... TONS,each weight at least 50pcs6.Hole diameter:51MM, plates diameter:450mm7.Trade term:FOBqingdao 8.Paymen term:T/T ... as best price.If you are interested in our bumper plates, please let me know, we are looking forward to ...