This part is the replacement door plunger or door strike for your washer. It is made of white plastic and is approximately 2 inches by 1.5 inches. The door strike attaches to the washer door and activates the door switch when the door is closed. If the door switch is not activated, the washer will not start. Therefore, if your washer will not start, you should inspect your door strike to see if it is cracked, damaged, or missing. This part is sold individually and is an OEM part sourced directly from the manufacturer.