Hayes Disc Brake Pads are compatible with the Hayes Dominion T2 brakes and act as an upgrade for the Dominion A2 brake calipers. Made of a Semi-Metallic compound, they have greater modulation and make less noise than sintered pads while maintaining adequate stopping power. The aluminum backing plate helps dissipate heat and reduce weight. Features: Semi-Metalic compound is a quieter and smoother feeling compound but doesn't last as long as sintered metal Pair includes one pair of pads with retention clip Specifications: Model: Hayes Dominion T2 & A2 Pad Material: Semi-Metallic compound Backing Plate Material: Aluminum