I’ve got some on my latest set up (brown bomber in the latest cruiser page thread.
I’ve not had chance to slide them on concrete yet but they are fast on wood/ metal. They’re a lot taller than the pig rails and the screws seem beefier. More similar size to the streetplant ones
Was quite hard getting them screwed down flushed to the deck.
The plastic feels hard, Kind of like the pig rails do and not that slight softness that Powell rib bones have.
They’re ok so far but if I’m honest I should just buy rib bones each time as nothing else I’ve tried is any better.