Organic Clarks organic disc pads are specifically designed to give the best performance under normal conditions. The organic compound gives improved noise reduction as well as increased ‘bite’. Recommended for use with Mechanical Systems. Model Compatibility: Shimano XTR-XT-SLX -Saint, Hone M601, Deore XT, M765, LX, M685, M858, M965/966 Clarks HDB540, 600, 700, CMD-24 Supplied with spring clips where applicable