Febi's wheel cylinder's are always produced with the highest precision and are designed to fit extremely accurately. Febi's wheel cylinders are manufactured using lightweight aluminum or cast iron to match the original design. The EPDM rubber used in Febi's wheel cylinder is a long-life formulation, 100% compatible with all types of brake fluid. Product Features:Resistant to corrosion and to brake fluidProvides a longer service lifeMade with high quality EPDM rubber cups and boots for long lasting performanceManufactured to OE Quality specifications