Advantage™ All Season Metal 18″ Black Wiper Blade (8-4418) by ACDelco®. 1 Piece. Blade Type: Conventional. Installation Type: Hook, Side Lock, Bayonet. Material: Rubber, Metal. ACDelco Advantage All-Season Metal Wiper Blades are conventional-style windshield wipers with steel construction that provide strength and durability to stand up to harsh environments. These windshield wipers feature an easy-fit universal adapter that allows for installation on more than 90 percent of vehicles on the road with no additional adapters.