Bosch 40320 SteelTech Wiper Blade - 20" (Pack of 1) The smallest droplets are removed for a clear view and added safety by the precision-cut natural rubber wiping edge Blade lift-off at highway speeds is fought off by the aerodynamic all-steel frame Friction and noise are reduced by the graphite-treated wiping edge Provides a consistent clean wipe due to the dual steel tension springs that support the wiping edge Installation is extremely easy thanks to Bosch's exclusive SteelTech one-step system