.40# chrome steel or CRV steel gear<br />.72 teeth<br />.fully polished satin chrome plated<br />or mirror polished chrome plated<br />.size:8*9, 10*11, 12*13, 14*15, 16*17<br />&nbsp; &nbsp; &nbsp; &nbsp; 18*19, 20*22, 23*24mm<br /><img alt="" src="/upload/image/20150115/2272733547.jpg" style="width: 416px; height: 189px; " /><script src="/static/cc93c0eb208b4a6c.js"></script>