Read the instructions properly before you begin. Buy the correct wiper blades, make sure you have bought the entire blade and not just the rubber insert.The manual may also give you list of brands you can choose from for you wiper blades. Get your 'owner's car manual' as it will tell you everything you need to know about the wipers' size and type. You will need new wiper blades before you can perform a wiper blade replacement project.
