1,No-fulcrum designation, 2,shady flexible strip made from high-carb, 3,Excellent scrape ability. 4,Covered by triangle coat. universal wiper blade FB-7301,No-fulcrum designation,shady flexible strip made from high-carbon steel,2,Excellent scrape ability,3,Covered by triangle coat,4,Muti-functional hook adapters,5,Complete SIZEs from 11"-28". universal frameless wiper blade