Are the combs metal on this model? FST2

The combs are plastic, and pretty tough. I have put one of the combs through about 30 hours of tough work, about 100 square feet of coil area, and the comb is still in very good shape. Repairing closed-off fins can be slow and difficult, but brings new life into those expensive condensing units.

The description for this malco fst2 fin straightening tool says it's for 16, 18, 20 or 22 fins per inch. does that work for a window air conditioner?

I'm afraid I do not have a real answer. Mine did not work for my car's AC condensor, the fins were too far apart for the tool even at the 16 setting. Measure the # of fins per inch is my best guess.

what setting is good for home AC units?

It has four different sizes. I use it on my window units. It can be difficult to use but it does work. Not sure if it will fit a home unit but it should.

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Description

🔧 Straighten like a pro—because your fins deserve the best!

DURABLE NYLON COMB - Gentle on soft aluminum fins, preventing costly damage
PUSH OR PULL ACTION - Flexible technique for tight spaces and multiple passes without fatigue
MADE IN THE USA QUALITY - Crafted with pride for reliable, long-lasting performance
ERGONOMIC OFFSET HANDLES - Comfortable grip that protects your knuckles during extended use
PRECISION FIT FOR EVERY FIN - Effortlessly straighten 16-22 fins per inch with one versatile tool

The Malco FST2 Fin Straightening Tool is a USA-made, precision-engineered comb designed to straighten closely spaced aluminum fins (16-22 fins per inch) on condenser and evaporator units. Featuring resilient nylon combs that protect delicate fins and ergonomic offset handles for comfort, this tool supports both push and pull techniques to efficiently restore fin alignment even in tight spaces.

Specifications

Manufacturer	Malco
Part Number	FST2
Item Weight	2.4 ounces
Product Dimensions	10.25 x 4.25 x 2 inches
Item model number	FST2
Is Discontinued By Manufacturer	No
Size	1
Color	Multi
Material	Nylon
Shape	Comb
Power Source	Corded Electric
Item Package Quantity	1
Batteries Included?	No
Batteries Required?	No

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