Minimal profile, concave platform pedal has 10 adjustable pins per side for maximum grip. Stamp pedals are optimized for different shoe sizes by providing both Large and Small Premium internals: outboard/inboard igus II glide bearing and double seal system Die Cast aluminum body and Chromoly spindle The left pedal is indicated by a small grooved line around the threads of the spindle 5 year manufacturer&';s warranty Pedal Type: Platform Pedal Spindle: 9/16" Spindle Material: Chromoly Pedal Body Material: Aluminum