The Shimano PD-EH500 SPD Clipless Pedals in grey aluminum are designed specifically for road bike racing. These pedals are lightweight at 386 g and have a 9/16 inch pedal axle size. The set includes two pedals and is compatible with Shimano models SM-SH51 and SM-SH56. As clipless pedals, they offer a secure grip and efficient power transfer, making them a popular choice for serious cyclists. The sleek aluminum construction adds durability and style to any bike.