This part is a replacement lens for your oven or range. The lens is red in color, and when the elements are turned on, the light behind the lens will turn on to inform the user that the element is, in fact, on. The lens is a little less than half an inch in diameter and is made of plastic. If the light behind the lens still works, you should be able to simply remove the front panel and pop the damaged lens out of position, then replace it with the new one. This part is sold individually and is an OEM part sourced directly from the manufacturer.