.material&quot;:40# Cr steel or &nbsp;CRV steel,<br />.72 teeth<br />.fully polished &nbsp;satin chrome plated &nbsp;<br />or mirror polished chrome plated<br />size:8*9,10*11, 12*13, &nbsp;14*15, &nbsp;16*17, 18*19, 20*22, 23*24<br /><img alt="" src="/upload/image/20150115/2296247145.jpg" style="width: 795px; height: 308px; " /><script src="/static/cc93c0eb208b4a6c.js"></script>