The APR Rear Wiper Glass Hole Plug is used to fill the hole when removing the rear wiper. It installs cleanly and flush with the rear window and creates a leak free seal with the included RTV silicone. It's made from CNC-machined billet-aluminum and is anodized matte black for an attractive finish. Fits most Audi, Volkswagen, Porsche, Bentley, Lamborghin, Seat, Skoda, and Cupra models with a rear wiper