Ikea Komplement drawer started to slide open by itself. I discovered the plastic bump stop had broken on one side of the drawer. These are also good to replace worn bump stops and give a more positive closing feel. I glued the original back together just to measure dimensions. To install: Remove slider mechanism from the wardrobe first. To get to the plastic bump stop you will have to bend a small metal tab so the metal slider can be slid right back. (This is hard to do as the metal is quite thick - I used long handle pliers to generate enough force). The bump stop rotates to one side so it can be removed/replaced. Bend the tab back when done.