Lead free technology soldering irons designed for operating with lead free solders. Fitted with more efficient heating element. The SR-6XX series tips for these soldering irons are presented later in this section. The soldering irons are sold together with the SR-622 tip. PENSOL-IRON-N are designed with standard PENSOL stations series SL-XX-N , and PENSOL-IRONE-N for ESD standard PENSOL stations. NOTE! These soldering iron can be connected for previous models of PENSOL stations series SL10 , SL20 , SL30 in standard and ESD versions.