AM246S Bosch Aerotwin Twin Pack 26″ (650mm)/15″ (380mm). Bosch Double Pack Aerotwin wiper blades are now also available as a retrofit for vehicles built since the early 1990’s which are fitted with hooked wiper arms. . Double/Twin Pack Aerotwin wiper blades. This twin pack is for Vehicle-Specific Original Adapters – Maximum Performance Flat Wiper Blades with Vehicle-Specific Original Adapters (Push Button Fitting). High quality original Bosch wiper blades built with tension strip to ensure effective wiping performance across the entire windscreen, long service life due to consistent force distribution. Triple component wiper rubber for quiet wiping. Supplied with spoiler for clear vision at high speeds. Latest development in flat-blade wiper technology provides precise and consistent distribution of the wiper blade’s pressure along the entire wiping edge.