The Shimano PD-M520 Clipless Pedals - Top functional performance and reliabilityThe Shimano PD-M520 are clipless pedals with SPD binding whose function and reliability have been proven for decades. The compact pedal body design with open construction facilitates entry. In addition, the PD-M520 pedal stands out for its dirt-repellent properties.Open design pedal at an economical priceThe open binding system is designed to better shed mudLow maintenance sealed bearing cartridge axleSPD Cleat Surfaces on both sides. Cartridge Spindle. Aluminum/Barrel pedal body.Spindle Thread : 9/16". Cleat Retention indicator. Mud Shedding Design. Average Weight : 380 grams pair. Cleats are includedCompact body design with open binding for easy-entryBetter mud and debris shedding than any pedal in its classCustomize the entry and release tension settingsChrome-moly spindle and low-maintenance sealed bearing cartridge axleSpecifications:Application: Cross Country, All MountainType: clipless pedalsPedal System: SPDCleat Mount: 2-boltBody Material: forged AluminumAxle Material (spindle): steel (Cr Mo)Bearings: compactRecommended Cleats: SM-SH51, SM-SH56Features:Rotation: 4 degreesAdjustment: Allen key 3mmPlatform Dimensions: 42 x 61mm (approx.)Sealed cartridge bearing spindle keeps out water and mud for a smooth action, and makes for a durable pedalOpen design helps to shed mudDouble sided pop-up binding, dual front and rear cleat tension adjustment, cartridge bearingsSPD cleats includedWeight: 380g (Pair)compact pedal body construction with open design for easy accessopen construction of double-sided binding provides excellent dirt repellencycartridge axlesealed mechanismrelease tension adjustpolished (silver) or painted (black, white)optional SM-PD22 reflectorsManufacturer Numbers:white: PD-M520Wblack: PD-M520Lsilver: PD-M520S