Kool Stop Hayes Prime MTB Disc Brake PadsThese brake pads are specifically designed for use with Hayes Prime disc brakes and they offer smooth and consistent stopping power on the most demanding of terrains. Weighing only 23g and coming as a pair, these are a great choice of upgrade for breathing new life back into your disc brakes.Features: Compatibility: Hayes Prime disc brakes Use: MTB Type: Disc brake Single or Pair: Pair Manufacturer’s Part Number: KS-261 Weight: 23g (pair)Buy Kool Stop Components from Chain Reaction Cycles, the World’s Largest Online Bike Store.