Brand New - Unused Parts part number FCR6 This is a Fin Comb Set Six of the most popular fin combs on a convenient ring. Straightens and cleans evaporator and condenser fin coils. Combs included: Orange: 8 and 10 Fins Per Inch Yellow 9 and 15 Fins Per Inch Blue 11 and 13 Fins Per Inch Green 12 and 14 Fins Per Inch Lime 16 and 17 Fins Per Inch Red 18 and 20 Fins Per Inch