Features:Made of fine quality aluminum alloy material for long service time.Fine workmanship, hollow design, lightweight.Made of fine quality aluminum alloy, practical, waterproof, wear-resistance, and not easy oxidation.Standard 14mm thread diameter, suitable for most kinds of bicycle and not easy to loosen.There are 6 nails on each surface to prevent slipping.The left and right marks are printed on the surface to quickly distinguish the left and right pedal.Lightweight, no burden on riding. Y25848