Hey, I purchased the same $7.49 crankset this past winter, just in case I wanted to try it on my hybrid. It is still in the packaging.

When I purchased my Fuji flat bar bike, it had 175mm on my frame size. I got them to swap it with the 170mm cranks on the next smaller size frame for free. That is working okay.

I picked up an old 1980s Panasonic bike that has 165's on it. I like those a lot.

And I swapped out my 170's on my recumbent for 155's. Many people find that they like shorter cranks on bents. My cadence is up about 15 and my speed close to 2 mph. The bent is now a much more pleasant ride.

I'm toying with the idea of trying to find a high'ish quality MTB crankset with 165 arms to put on the Fuji. I think a good 44/34/24 w/165 would be nearly perfect on that bike.