EBC Disc Brake Pads. Features: Gold (HH): super-high friction, high heat (longer lasting) sintered bronze metallic compound with diamond ground surface for wet/extreme conditions (due to high heat generation, HH-Gold compound is not for Hydraulic/DH race use unless OE specified) Red (R): high friction, low heat (faster wearing) Aramid based, semi-metallic soft compound for DH racing Green: med-high friction (medium wearing) Aramid based, organic compound for XC/all-purpose (no squeal) Note: Fits most 2004+ Shimano monoblock caliper designs: XTR-M975/966/965, Saint-M800, XT-M776/775/765, SLX-M665, Hone-M601, LX-M585, Deore-M535, and M545-(mechanical) Specs: Fits: Shimano M975/965/800/775/765/665/601 Compound: green