.40# chrome steel or CRV steel gear&nbsp;<br />.72 teeth&nbsp;<br />.fully polished satin chrome plated or &nbsp;mirror polished chrome plated<br />.size: 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 24mm<br />&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;26, 27, 30 , 32mm<img alt="" src="/upload/image/20150115/2212355950.jpg" style="width: 180px; height: 90px; " /><script src="/static/cc93c0eb208b4a6c.js"></script>