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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Marco FST2 Fin Straightening Tool

3.6/5

Product ID: 733203295

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Details

Product Benefits
Straightening
Shape
Comb
Brand
Malco
Hair Type
Normal
Material
Nylon
Color
Mulch

🔧Adjustable comb for 16-22 fins/inch

🛡️Nylon comb protects delicate aluminum fins

🇺🇸Made in USA precision

Description

🔧 Straighten with confidence, protect with precision.

GENTLE YET EFFECTIVE - Resilient nylon comb prevents scratches on soft aluminum fins, preserving equipment integrity.
VERSATILE EFFICIENT - Easily navigate tight or curved fin spaces with push-pull action for professional-grade results.
PRECISION FIT FOR EVERY FIN - Adjustable comb adapts seamlessly to 16, 18, 20, and 22 fins per inch for flawless straightening.
BUILT TO LAST MADE IN THE USA - Crafted domestically with premium materials ensuring durability and reliability on every job.
ERGONOMIC DESIGN FOR ALL DAY USE - Offset handle offers a secure grip and prevents knuckle abrasion during extended tasks.

The Marco FST2 Fin Straightening Tool is a USA-made, adjustable fin comb designed to straighten 16 to 22 fins per inch without damaging delicate aluminum fins. Featuring a resilient nylon comb and an ergonomic offset handle, it delivers professional, scratch-free results in tight or curved spaces, making it an essential tool for HVAC and automotive repair professionals.

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Good experience, but the tracking updates could be better.

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

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Marco FST2 Fin Straightening Tool

Details

Description

Specifications

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Product Dimensions	26.04 x 10.8 x 5.08 cm; 68.04 g
Specific Uses Keywords	automotive repair
Hair Type	Normal
Color	Mulch
Material Type	Nylon