Part Number: 1121-0377 (Solder pen tip)Part Number: 1121-0377-P1 (Solder pen tip)Part Number: 3439-01-380-8802 (Solder pen tip)Part Number: 3439-01-381-6147 (Solder pen tip)Part Number: 3439-01-393-3032 (Solder pen tip)Part Number: W011-3808802 (Solder pen tip)Part Number: W011-381-6147 (Solder pen tip)Part Number: W011-3933032 (Solder pen tip)