
Help.
I need to find about 10 or so of these little fellas.
Nylon (well any plastic will do) approx dimns are 17mm OD, 4mm ID, 7mm thick with a rounded grove all way round the outside.
They screw under the bottom edge of my trailer tent and some shock cord (about 5mm) hooks behind them.
I tried my local camping shop and was met with blank faces and 'err dunno' response.
So, anyone here got any ideas what they are called so I can google it better? Or know of a supplier?
I have already typed in the manufacturers name and 'spares' and 'parts' on ebay and google but no luck yet.

Also, the rebate in the faces is not important, they can be solid, infact I would prefer it as I think if they were solid I wouldn't be needing the spares now
Nylon pulleys off the shelf from your local bearing stockist, or 10 minute job on a lathe.
Cleats are similar,
Linky
Cheers
Rich
They look like the wheels I got to replace the broken ones in our dishwasher, the ones that the tray runs on.
Might be another possibilty?
I think those cleats Rich suggested will do the job so I've bought some.
Thanks locostbuilders 
We had a cover made for our Combi and the buttons were supplied with it. It was from specialisedcanvas.co.uk at Staveley. Also available at Penrose
Outdoor as cover buttons.
Link
to
[Edited on 8/3/10 by Peteff]