It is not a secret that standard headlight covers tend to lose their fasteners, and then simply do not press against the headlight housing properly and allow moisture and dust to enter, which contaminates the reflector and bulbs. The replacement can be a rubber duster on the headlight. The seller offers a large selection of sizes, so you can easily find dusters for your headlights. Material: durable rubber, does not crack and does not dry out. The set contains 1 duster.