Hard to tell how big and strong they are from the pics... I always prefer to use d-rings instead of hooks when possible. Straps can't fall off between tugs that way.
I never tug ever, i have a bungie strap and winch.
they are OEM from my 1994 chevy K5 Blazer so i think they are rated for a higher weight class, i just thought the might look good for my bumper.
Kinda like tusks, you know walress and puma like........(lets see who gets that joke)lol
By tug I meant get a pull using your bungie strap. In my experience one attempt doesn't always work, so it would suck to have to get out and go hook the strap back up between pulls.
I say use them. I had a 92 Blazer for several years and, even though I rarely got stuck (cause that thing was a beast), I abused those hooks and know they are tough.
here is my strap i watched the polar exspress episode of top gear and had to have one, and i always keep lighter fluid handy on the trail too in case of a tire beed falling off.