With the introduction of SPD, Shimano created the mountain bike clipless pedal category. They are never quite content to sit on past accomplishment, however, so through extensive R&D the SPD design continues to evolve by introducing the new XTR PD-M970 pedal. Features: Improved cleat interface for Increased pedaling stability Flourine coated binding claws allow easy entry and release The open binding mechanism is designed to better shed mud Strong and durable chrome-moly spindle Durable and lightweight aluminum body Weight: 325 grams per pair