XRB bearingfocus on produce 6056.MA deep groove ball bearings,6056.MA deep groove ball bearing inner diameter is 280mm,6056.MA deep groove ball bearing outer diameter is 420mm,6056.MA deep groove ball bearing width is 65mm,6056.MA bearing are made of chrome steel,each 6056.MA bearing must be 100% testing before shipment,XRB 6056.MA bearing are the same with Russia SPZ 6056.MA bearings.