This Unger ErgoTec soft rubber blister pack is an 18-inch (45cm) replacement rubber that fits standard squeegee channels for straightforward replacement. The soft rubber conforms to uneven glass surfaces for streak-free results and stays flexible even in cooler temperatures, keeping performance consistent through the season. The reduced-friction surface allows for smoother, more efficient squeegee strokes, and the resealable blister pack keeps the rubber protected until it's installed.