LIGHTWEIGHT AND PREMIUM QUALITY Composite body 299g per pair Stamp Small 329g per pair Stamp Large PROVIDES SUPERIOR GRIP AND PERFORMANCE Optimal surface area with a minimal profile that is 13mm thin 9 hex pattern adjustable pins per side for traction DURABLE PREMIUM COMPONENTS Premium quality Igus bearings and seal system Chromoly steel spindle fully serviceable with refresh kit 5 Year warranty OPTIMAL SHOE PEDAL INTERFACE TWO SIZE SPECIFICS Stamp Small 100mm x 100mm recommended for shoe sizes 510 us Stamp Large 114mm x 111mm recommended for shoe sizes 1015 us DESIGNED TOGETHER WITH CRANKBROTHERS SHOES Crankbrothers Stamp shoes are designed to create the optimal shoe pedal interface through the Match system