ADVICS WCT-039 Rear Drum Brake Wheel Cylinder Anodizing and "Kanizen" plating of cylinder bodies strengthens surface, ensuring smooth operation of the piston while resisting corrosion Ethylene Propylene Rubber (EPDM) prevents leakage, gives superior heat and corrosion resistance and offers long service life Quick-Response OEM design means no delay in reaction to driver's clutch and brake pedal input Solid connections and free-flowing fluid capabilities Precise fit is consistent, safe and reliable