ITEM NAME:2pcs A1322 Ceramic Heater Soldering Station Replacement Heating Element 24V Hn.Usage: applicable for HAKKO welds and soldering iron models: 936, 937, 938, 942, 953, 956, FM-202, 931, 933, 934, 455, 456, 373, 815, 816, 702B and so on. Length of soldering iron head: 39mm/1.54". wire adapter, with constant temperature function.