Bosch ICON 21B Wiper Blade, Up to 40% Longer Life - 21" (Pack of 1) Exclusive fx dual rubber resists heat and ozone deterioration and proven to last up to 40% longer than other premium wiper blades Easy installation with original equipment-quality hook adapter (Hook arm 9x3 & 9x4) Patented beam design with shielded connector optimizes visibility even under extreme weather conditions Exclusive tension spring arcing technology creates a fit thats custom-contoured to the curvature of the passenger side (B) Flexible asymmetric spoiler distributes uniform downward force along the entire blade to hold it firmly to the windshield at higher speeds