crwdns2933423:0crwdne2933423:0
crwdns2918538:0crwdne2918538:0

crwdns2934241:0crwdne2934241:0 mayer

crwdns2934249:0crwdne2934249:0:

Those just push out from the inside.  I buy them off eBay a dozen at a time but you may be able to just get a couple.  I also put a couple of drops of super glue on them when seating.  There is a small dot that aligns with a corresponding hole on the rim.  Here's a set of four for $2.70 & free shipping:  http://www.ebay.com/itm/4-pcs-New-OEM-Apple-Macbook-Pro-Unibody-Bottom-Case-Rubber-Feet-Foot-13-15-17-/301579648164?hash=item46378c3ca4

crwdns2915684:0crwdne2915684:0:

open