TRICO 67-401 Heavy Duty Wide Saddle Arm Wiper Blade - 40", 1 Pack Designed to fit Class A Recreational Vehicles and Transit Buses Fits curved windshields Wide saddle blade design Natural rubber squeegee. Sturdy steel frame construction These refills are manufactured to fit the original equipment wiper assembly, If this assembly has been replaced with anything other than an OE product the refill may not fit properly