Using a Fin Comb on your air conditioner is a great way to clean and straighten the fins on your compressor. With every stroke, a fin comb removes kinks or bends in the fins by actually separating them. While you are straightening the fins, the fin comb is also cleaning the space in between. Using a fin comb makes fast work of straightening and maintaining the fins on your system, helping it to run more efficiently. The straighter your air conditioner fins, the more air flow you get to you condenser. The Refco 14144 is steel and is totally adjustable to fit any fin spacing you may need.