Die-cast aluminum body, engineering thermoplastic platformHeat-treated, CNC-machined chromoly axleLSL bushing and sealed cartridge bearing systemDouble-sided chromoly binding, spring-loaded, tension adjustable with gaugeCompatible with Exustar two bolt road shoes, other two bolt hole shoesCompatible with Shimano style SPD cleatsEasy entry pop-up binding9/16`LSL/Sealed Cart.Clear/SilverSPD