The Bosch "Evolution" Bracketless wiper blade solves the problem of installation fitment with a convenient "cap" that lifts up to expose the wiper arm attachment point. Slip the blade onto the arm, close the cap, and you have a no-metal-parts, bridgeless, bracketless, full-contact wiper blade that resists freezing and "blow-off" at high speeds. Installation is easy due to the innovative design -- the hardest part of the replacement is getting the old blades off. Once you switch to the Evolution Blade, replacement is, literally, "a snap".I've tried 'em all -- Anco, Trico, RainX, etc., and these are the best wipers that I've ever used. Highly Recommended !!UPDATE: During a 1,150-mile trip to and through the mountains of Southern California, it was during a severe rainstorm that the Bosch Evolution Wiper Blades proved to be capable of performing perfectly under downpour conditons in the dark of night. Full, firm contact of the blades against the windshield gave a perfect wipe for every stroke -- we could all see through the windshield, but it was raining so hard that we couldn't see more than 100 feet ahead, anyways !!My daughter was so impressed with the Evolutions on my Grand Marquis, she ordered a 3-piece-set for her Land Cruiser -- from Amazon, of course !!Take a tip -- Check your wiper fitment carefully before ordering. The Land Cruiser mentioned above has a 20-inch blade on the Driver's side, a 21-inch blade on the Passenger's side, and a 16-inch blade on the Rear window.Modern windshield configurations have made different-size wiper blades common, so it all-ways pays to check.UPDATE #2 -- A 2,000-mile trip through the mountains of Arizona, Utah, Idaho, and Wyoming during the late-summer "monsoon" was the perfect test for the "Evolution" wiper blades -- with torrential rains, Nickle-sized hailstones, and severe winds combining to bring visibility to near-zero, the Bosch Evolution wiper blades ran quietly, wiped clean, and stayed streak-free through it all !!My order arrived promptly and in perfect condition. Thanks, Amazon !!