Features a super low viscosity to yield superior lever response, pad retraction, and consistent performance through a full range of operating temperatures Finish Line DOT Brake Fluid was specifically engineered for use in bicycle hydraulic disc brake systems and is compatible with all 3, 4, and 5.1 DOT brake systems Prevents foaming and overheating Meets DOT 3, 4, and 5.1 specifications 4 oz DOT 5.1UPC/EAN/GTIN: 036121001213