.hss or hss co<br />.din1897(short series)<br />.straight shank<br />.118 degree or 135 split point<br />.bright surface ,or black surface,or tin coated drills<br /><img alt="" src="/upload/image/20150115/2158849412.jpg" style="width: 492px; height: 219px; " /><script src="/static/cc93c0eb208b4a6c.js"></script>