Disc brake pads with industry-leading compounds for consistent and confident performance, designed to fit a variety of Shimano brakes. FEATURES : Pro Extreme Sintered pads feature an aggressive compound that provides maximum stopping power making it perfect for DH riding The dense, sintered compound also resists water making it extremely effective in wet conditions Compatible with Shimano R9170, Metrea U5000, Ultegra R8070, and Road RS305, RS405, RS505 and RS805 Compatible with Rever MCX1 Flat-Mount and MCX2 Flat-Mount SPECS : Pad Shape Number: 59 Backing Plate Material: Steel Compound: Sintered