* Polished alloy steel.
Warm Tips: * Please be really careful when you are using the tools, and you’d better keep it somewhere kids can’t reach.
* Please switch off, when not using the pencil iron. And please do not keep the soldering iron working under high temperature.
* When welding, do not use too much pressure. As long as the iron tip fully contact the solder joint, heat can be transferred.
* To avoid oxidation, please clean soldering iron tip and "tin" all faces of tip with a coating of solder after using. If there is black oxide on the iron tip, please clean it by wet sponge firstly.