> According to the parts list that I have, the only one with that > diameter has > a height of 2.159 mm. The part # is SJ5302SPCL. > Thanks for this. It turns out that in Australia these are only sold in packs of 3000. Now I'm committed to Apple products but I doubt I'd use that many, so I called 3M and I started by saying "I'm looking to buy a really small number of things that are usually sold in a pack of 3000..." and the woman cut in (without a moments pause) with "You'll be wanting Bumpons..." No, she wasn't reading my mind. Apparently they get 50 calls a day from around Oz and NZ from people looking for rubber feet for all sorts of things. The wonderful woman said company policy is to refer to re-sellers who split packs, but her personal policy was to send them off for free if the required quantity was less than 10 :). Now I remember...it's called "service". We used to have a lot of it about in the old days. Gerry