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.

Marco FST2 Fin Orthodontic Tool

Product ID: 733203295

Details

Brand
Malco
Color
Mulch
Heater Surface Material
Stainless
Item Weight
68 g
Material
Nylon
Model Name
Malco FST2 Fin

🔧Adjustable comb for 16-22 fins/inch

🛡️Nylon comb protects delicate aluminum fins

🇺🇸Made in USA precision

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€ 70.64

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Sold byAmazon ItalyDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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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.

Reviews

Z**R

Nice product

26.01.2026

N**E

I could not believe how easy to use this tool is. The results were incredible. The previous owner used a pressure washer to clean the coils, and flattened quite a few areas on the coil. The A/C repairman recommended getting a new coil, I never got a price, but I managed to straighten almost all of the fins for $50. Can’t beat that, this thing works and works well for anyone.

17.09.2022

م**ي

السعر 130 ريال وكنت اتوقع الكاولتي عالي لكن للاسف مصنوع من البلاستيك لو الاسنان مصنوعه من الالمنيوم او الحديد اعطيه 5 نجمات

8.07.2023

S**I

يمكن تم تفصيل شعيرات المنتج على مكثفلت غير موجوده على سطح الارض جربت على السيارات الجابانيه والامريكيه ولا يوجد تطابق بين الشعيرات وشعيرات المكثف

9.07.2023

E**C

Needed it after a storm. Did the job.

8.04.2026

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Excellent communication throughout the order process. Product is perfect.

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The product quality is outstanding. Exactly what I needed for my work.

1 month ago

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€ 70.64

Duties & taxes included

In stock

Sold byAmazon ItalyDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Italy.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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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

Marco FST2 Fin Orthodontic Tool

Details

Details

Description

Specifications

Reviews

Common Questions