One Pass

One Pass is the brand behind the original T-Bar silicone water blade, which its founders patented and brought to market in 1996 under the name "The Original California Water Blade." The brand claims to be the first to apply a flexible, T-bar-mounted silicone squeegee to automotive paint-safe water removal. The product line includes multiple blade lengths (12, 14, and 18 inches) designed for different vehicle sizes, from compact cars to RVs and buses.

The brand relaunched the Classic line under the One Pass name after the California Water Blade era. Construction is USA-made per manufacturer claims, with medical-grade silicone as the stated blade material — a claim that, if accurate, positions the blade above standard windshield-wiper-grade silicone compounds. One Pass remains a niche brand with limited retail distribution outside Amazon and its own website.