The Autotex 71 Series 18" Narrow Saddle Flat Wiper Blade is the perfect solution for old model school bus and RV applications. This wiper blade is designed to fit 5mm and 6mm narrow saddle wiper arms. It features a stainless steel frame that is specifically designed for flat windshields. With its easy installation and reliable performance, the wiper blade is designed to provide superior wiping performance and long lasting durability. FleetPride is your First Click in Heavy Duty®.