The Shimano PD-R540 uses the same SPD-SL cleats and retention system as the more costly Dura Ace and Ultegra level pedals, but it cuts costs by using a body shape that the others once used, but have since moved away from. And while it may lack in the extraordinary sleekness of Dura Ace and Ultegra, it offers the same stable, wide cleat platform, low stack height, and great cornering clearance SPD SL pedals are known for. And it does so at a nice price.It uses a chromoly steel-spindle, aluminum pedal body, and composite cleat retention bar. The spring tension is adjustable via a 2.5mm hex bolt in the top of the retention mechanism and the settings are visible through a small window on the back so you can make sure that each pedal is adjusted to match. Each pedal runs on two sets of ball bearings. There's a plastic plate atop the pedal so any cleat rub will wear the plate without damaging the rest of the body. The pedal comes with the SM-SH11 floating cleat (the one with the yellow wear tabs). It is designed for three degrees of float from center, in both directions. Stack height is 14.3mmThe Shimano PD-R540 Pedals come with a pair of cleats and mounting hardware for standard three-hole applications. Shimano PD-R540 Road Bike Pedal Features: Wide platform for a more efficient transfer of power Wide bearing placement for stable, uniform load distribution Low maintenance sealed cartridge axle unit Adjustable entry and release tension settings 330 grams