Time Xpresso 4 Pedals Instead of metal springs, flexible carbon fiber blades tension the retention mechanisms, ensuring a secure pedal connection while reducing weight Getting into the pedals is a breeze, thanks to the low-tension engagement of the retention mechanism: step in with little pressure, pedal engages cleat, and then pedal away! Excellent foot-to-pedal stability and solid power transfer are achieved through the oversize pedal platform and low stack height (distance from shoe sole to pedal axle) Light and sturdy composite pedal bodies spin smoothly around steel axles; replaceable stainless-steel wear plates enhance pedal durability Foot/pedal interface can be tuned and optimized, offering adjustment to Q-factor (side-to-side), +/-5 of angular float and 2.5mm of lateral float; 15 release angle