Installation Precautions: Please look for the right foot mounting, "L" mounting left, "R" mounting right. The left foot pedal is counterclockwise to tighten, clockwise to relax. Align the crank thread, at maximum torque to avoid the pedal crank slide. When installing for the first time, first slowly turn the pedals into by hand, until the correct after tightening with a wrench to avoid slide.