Description of Weller EPH101 Micro Point Conical Solder
Reach eph micro point tip for EC1302, EC1301 series irons. Tips are solid copper plated with iron all over. Nickel and chromium behind the Working surface. Designed to provide maximum heat transfer from the heater to the tip.
These soldering tips were rusty when I received them. Judging by their appearance, they are not of high quality. I don't think it should be rusty though.