Well, found it allready, should have looked first. They are about $9.75, so not much cheaper. Not sure if I need 3" or 4", as not sure how/where they measure from. Only two pix of listed parts, so don't know what else is offered really. Lots of other neat little gadgets listed there too, have to go back and look.
Edited by glgrumpy, August 29, 2012 - 01:27 PM.