These don't require eyelets.

As for suitability, it depends. They're designed specifically for low-clearance applications on bikes that weren't really designed to take fenders. If your bike was designed for fenders and has eyelets, I'd go with standard fenders. I run SKS P35s on two of my bikes.

I run Cruds on my Litespeed through the winter. They barely fit through the rear brake with 25mm tires, and in front I have to switch to a 23 since it rubs on the 25. Standard fenders would never work on this bike, so the Cruds are a good compromise.

On the downside, they are not a rigid fender, nor is the mounting. As a result, as tjspeil mentioned, they sway back and forth and shift off-center. Additionally, the front tip of the front fender doesn't provide enough coverage for speeds over about 14-15 MPH. Faster than that and spray flying off the front blows back on to the bike. It's better than nothing, but don't confuse it with a full-coverage, rigid fender.