XRB bearing focus on produce 2768M bearings,2768M bearing inner diameter is 340mm,2768M bearing outer diameter is 530mm,2768M bearing width is 133mm,2768M bearing are made of chrome steel,each 2768M bearing must be 100% testing before Packing,XRB 2768M bearing are the same with Russia SPZ 2768M bearings. 2768M bearing are popular size that could be used in many applications, if you have demand for XRB 2768M,please contact with us.