Car windshield wiper blade replacements Wiper Refills from Unipoint, compatible with vehicles that have wiper size driver's 610mm. Replacing a worn blade is an economical and easy solution, as you don't need to replace the entire wiper with its attachments. Some signs that warn the driver of the need for immediate replacement are the sound they produce during use, as well as the water streaks that appear on the windshield from incomplete wiping.