Shimano Compatible Disc Brake Pads 22.9 grams per pairCompatible Systems: M515, M515-M, M515-LA, M525, M515-LA-M, M475, Nexave C501, Nexave C601 and RST D-Power, Tektro Auriga, AquilaNOT COMPATIBLE with Shimano Deore M415, M465, M495 brake sets and RT-53 rotors, which require resin pads.Jagwire Red Zone disc brake pads feature patented HeatShield technology that reduces heat-induced brake fadeItem SpecificationsSprings IncludedyesCompoundSemi-Metallic