I've just bought some for 9 quid.

Just wondering if anyone tried these, as can't find any posts on it?

I've recently put some on an X9 mech, too early to tell if they're durable or not.

They're okay in a run of the mill sort of way ime. It's worth popping the bearing seal off and adding some more grease before fitting them I think, there's not a lot in there as stock, or there wasn't in the last set I fitted anyway.

Just after I fitted them, I thought "I wonder if I should pop the seals and add some extra grease.." Never mind..

They certainly perform better than the rounded off squeeking ones they replaced! Let's see how long they last.

Jockey wheels are the sort of thing I can't bring myself so spend lots of money on.