Product review (5 stars): Good replacement supports.
Some people throw away fridges because these break on their shelves. Don't toss it, fix it. The round pin you see in the picture is what holds the shelf support to the wall of the fridge. You have two options: 1) drill the pin with a 1/8 bit and then put a screw into that hold and pull the pin out. 2) Push the pin further into the support until it passes into the foam and remove the support. Option 1 is optimal as it causes no damage to the foam surrounding the fridge. To install, align the shelf support and push the round pin in until it is flush.