The refrigerator uses a set of cams to help with the closing of the doors and help to keep them in position. These cams are mounted around the door pivot point and are made up of a series of ridges and valleys to help keep the door in position. If your refrigerator uses a door closer, the door should shut all by itself. This part is black in color, made of plastic, and is sold individually. This is a genuine OEM part. Note: As per the manufacturer a new screw is needed to mount the door cam. This door cam is sold individually.