AC Condenser And Evaporator Fin Comb Straightener Cleaner: 6-sizes-in-1 this comb is used to Clean and straighten condenser and evaporator fins. a simple "must-have" tool for HVAC professionals Six sided head make this tool 6 in 1 for multiple applications: for 6, 8, 10, 12, 14 and 15 fins per inch fin densities. Bended or deformed fins or dirty fins reduce the air flow and reduce the efficiency of the system, increase the high side pressure and add waring to the compressor. this tool is designed to help to relieve these situations. (right click and view higher resolution image)