HRC 12B1 sprocket-wheel z=13 with hubcap

Parameters of sprocket 12B1 3/4" Z=13sprocket apex diameter: 87.5 mmsprocket pitch diameter: 79.59 mmhub diameter: 58 mmbore diameter: 14 mmheight: 35 mmtooth thickness: 11.1 mmmaterial: C45 steelnumber of teeth: 13.