sport cleaning, great for the $
For Nylon, they are thinner than some of the other alternatives and crazy cheapo for those not into the prices of dyneema.
I haven't had any issue fitting these into any particular harnesses for cleaning or whatever. Used them for the past season and have noticed some mild wear/fray. I barely used these to set any kind of anchors or belay system and mostly used them only to clean sport routes.
They're still usable, and I'd get more if I need extra nylon slings. I'll probably try out the BlackDiamon version next to compare wear n tear. These do look cooler, if nothing else.