HRC 12B1 sprocket-wheel z=15 with hubcap

Parameters of sprocket 12B1 3/4" Z=15sprocket apex diameter: 99.8 mmsprocket pitch diameter: 91.63 mmhub diameter: 70 mmbore diameter: 14 mmheight: 35 mmtooth thickness: 11.1 mmmaterial: C45 steelnumber of teeth: 15.