Crank Brothers Stamp 7 Platform Pedals. Features: Forged, machined aluminum platform with 2mm concavity, 11mm thick at the center Offered in small and large sizes for optimal shoe-pedal interface Premium bearings with double seal system, steel spindle 10 adjustable traction pins per side Small is recommended for U.S. shoe sizes 5-10. Large is recommended for U.S. shoe sizes 10-15 Specifications: Platform Dimensions: 100mm x 100mm (S), 114mm x 111mm (L) Platform Material: 6061-T6 Aluminum Spindle Size: 9/16" (Standard) Spindle Material: Chromoly Steel Bearings: Sealed Traction Pins: 10 Per Side (Replaceable) Color: Black Weight: 345g (Small/Pair), 375g (Large/Pair)