Hayes D-Series MTB Disc Brake RotorThe D-Series disc rotor is intentionally designed to oppose that of Semi-Met T106 and Sintered T100 pads allowing for cancelling out noise and vibrations for more consistent braking. Thanks to its 1.95mm thickness, you’ll benefit from enhanced heat dissipation for fast and reliable performance.Features 1.95mm material thickness enhances heat dissipation QuickBite² - Offers riders the shortest path to high performance Fast, consistent burnish Predictable performance QuietBuy Hayes Components from Chain Reaction Cycles, the World’s Largest Online Bike Store.