The Autotex M6 Series 21" Pro Premium Plus Metal Wiper Blade is the perfect choice for drivers who demand the highest level of performance and durability. This wiper blade is designed with a super duty all steel frame that is 20% thicker than traditional wipers, providing superior strength and durability. The specially formulated rubber compound ensures lower friction and durability up to 1.5 million cycles, making it ideal for long-term use. FleetPride is your First Click in Heavy Duty®.