Hayes Semi-Metallic Disc Brake Pads. Disc brakes can make noise in some conditions. This material eliminates, or reduces squeaks and squealing. Better modulation. This means you get a "softer" feel at the lever when you brake. Braking power is progressive and consistent throughout each stop. Provide a high level of stopping power.Fits G2 calipersItem SpecificationsFitsHFX/9/MagSprings IncludedyesCompoundSemi-Metallic Hayes HFX Disc Brake Pads Disc Brake Pad UPC: 844171000557