8-4418 18" (455 mm) ACDelco Advantage beam wiper blades are economical replacements for GM and non-GM vehicles. They feature a frameless design that conforms to the shape of your windshield and maintains uniform pressure for a great wipe. These blades offer a low-profile design that helps with aerodynamics. Advantage wipers are equipped with a pre-installed universal adapter that fits most windshield wiper arms; additional adapter(s) are included for blades that fit specialty wiper arms. Order the model recommended for your application.