Bracketless is the new shape of wiper blade technology. As the name implies, bracketless wiper blades, also known as beam or flat blades, are designed without the metal or plastic brackets, joints or hinges of conventional wiper blades, so snow and ice have nowhere to build up. Bosch Evolution Wiper Blades feature a patented beam technology that applies more uniform wiper arm pressure along the entire length of the blade for virtually streak-free wiping performance.