28" long Super Duty J-Hook Wiper Blades are Engineered for maximum performance, the 67 Series wiper line is built tough! Constructed of a thick metal frame and massive rubber squeegee, it defines what super duty is all about. Once you've experienced the crisp cleaning ability of this super strong wiper blade, you will never settle for anything less. TRICO's 67 Series super duty blades are designed to be used with wide saddle wiper arms which are typically found on Class A motor homes.