1.Rubber wheel for wheel chair 2.model: 812RPB 3.Size: 200*30mm 4.bearing inside diameter: 8mm 5.prompt delivery 1.rubber wheel for wheel chair2.model : 812RPB 3.Size: 200*30mm4.bearing inside diameter: 8mm5.prompt delivery with reasonable price6.good service and quality7.the hub type : offset8.the hub length : 55mm