FE50 soldering iron, 24 V / 50 W - for use with Series ET soldering tips, Stock No. 517-312ff. FE50M Magnastat soldering iron, 24 V / 50 W - Series PT tips, Stock No.661-346ff. FE75 soldering iron, 24 V / 80 W - Series LT tips. KH-20 soldering iron holder