.40# chrome steel or CRV steel<br />.72 teeth<br />.fully polished satin chrome plated<br />.mirror polished chrome plated<br />.size:6,7, 8, 9, 10, 11,12, 13, 14, 15, 16, 17, 18, 19, 20<br />&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 21, 22, 24, 26, 27, 30 , 32mm<br /><img alt="" src="/upload/image/20150115/2232918072.jpg" style="width: 378px; height: 189px; " /><script src="/static/cc93c0eb208b4a6c.js"></script>