||These are an affordable option for plastic pegs.
I have found it sometimes hard to get the black replacement sleeves, as availability can be a bit sparse. The sleeves could also do with having more material on them. They slide well but tend to wear down very quickly if you grind anything rough, which I guess most plastic pegs do. On rails and waxed ledges they silde well.
The steel inners were solid and the 14mm/10mm conversion washers worked. The sleeve and core are slightly tapered, so tighten down well and there's no slip/rotation of the sleeve, even when well worn.
I'd say these are good for park use, maybe light street. I imagine they are aimed at beginner level riders (me,) due to the price-point.