Just got this 3-piece cleaning set and I'm pretty impressed! The stainless steel fin comb feels sturdy in hand, and the two plastic brushes are surprisingly effective at getting into those tight coil spaces.

What I love most is how versatile these are - used them on my window AC unit, fridge coils, even dusted off some electronics with the softer brush. The bristles are stiff enough to dislodge gunk but don't seem to damage anything.

The metal straightener tool works like magic on bent fins. Pro tip: go gentle with it at first until you get the feel. I did remove the white plastic adjuster like another reviewer mentioned - makes it easier to control.

Only minor complaint? The two identical brushes seem a bit redundant. Would've loved one with softer bristles for delicate surfaces. But for the price? Absolute steal!

After using weekly for a month, they're holding up great. Much better than using compressed air or trying to vacuum those impossible-to-reach spots. Definitely recommend for any DIY cleaner!