The Shimano PD-R550 SPD-SL pedals are excellent pedals for frequent road bike riders. These pedals rotate smoothly and offer good pedalling efficiency as well as great comfort. The price/quality ratio is excellent! Good pedalling efficiency The resin surface of these pedals is ergonomically shaped and extra wide. As a result, the power you exert on them is transferred efficiently to make you ride faster and with more control. This surface also ensures increased comfort and a reduced chance of developing foot complaints. In addition, a steel plate has been placed on the pedal body to reduce wear. Durable and smooth inner mechanism The cup & cone bearings combined with the ChroMo steel axle ensure a long pedal life. The axle also rotates smoothly, minimising resistance during pedalling.