Sleek, one-piece wiper technology, in a set! The ultimate flat wiper blades, utilising Bosch s revolutionary design, Aerotwin’s performance is unmatched by conventional blade systems. 600mm & 475mm / 24” & 19” in lengthUltimate wiper blade set A937S: The pioneering one-piece wiper blade. One of the most revolutionary wiper designs, the Bosch Aerotwin is a hallmark of innovation. The Aero spoiler creates down-force against the windscreen, just as the one-piece beam design produces even pressure, whilst offering a sleek, modern appearance. The lack of pivots and moving parts, as found in traditional blades, means almost no flex, chattering or noise, and significantly improved service life.