For Audi A1 A3 TT Car Washer Fluid Reservoir Bottle Filler Cap Lid Screen Wash
Once opened they also stay open until you clip them shut again, they don't keep closing over like the standard cap as you are trying to pour liquid in. For Audi A3 1996-2020. For Audi TT 2014-2017. For Audi A1 2010-2018.