Size specific platform pedal provides optimal shoe/pedal interface AM60B Magnesium Alloy pedal body for weight reduction Forged SCM 415 Chromoly Steel Spindle Minimal body profile - 16mm thin Concave pin profile & 10 adjustable pins per side for grip Premium bearings & seal system Small recommended for U.S. menÆs shoe sizes 5-10 Large recommended for U.S. menÆs shoe sizes 10-15 Serviceable. PEDAL STAMP 3 SM BLK MAG