The Shimano PD-GR500 mountain flat pedals provide a stable platform for off-road riding. Sold in pairs. Features: 3 different pin height settings to match different types of riding Highest setting is+5mm higher than PD-MX80s pins Specifications: Platform Dimensions: - Platform Material: Aluminum Spindle Size: 9/16" (Standard) Spindle Material: Chromoly Steel Bearings: Sealed Traction Pins: 9 Per Side (Replaceable) Color: Black Weight: 535g (Pair)