Extruded and CNC machined AL6061-T6 pedal body 2 sealed bearings and 1 DU sleeve bushing 9/16` CNC chromoly spindle 109mm x 110mm x 15mm concave platform for large feet M4-10mm outer and M4-8mm inner SS replaceable pins enhance concavity 9/16` 2 Sealed and 1 DU Sleeve Silver AL6061UPC/EAN/GTIN: 888571068694