The bike pedals are made of CNC machining aluminum alloy and chromoly steel spindle to ensure durability and light weight, providing cyclists with great pedaling experience. Features: CNC aluminum frame and chromoly steel spindle for extra strength and durability. Each pedal with 10 nails provides a superior grip for maximum pedal efficiency. 1 self-lubricating bearing and 1 sealed bearing for wear resistance and longer service life. Lightweight, weighing only 275 grams per pair. Suitable for mountain bikes and road bicycles. Specifications: Material: Aluminum alloy + Chromoly steel Color: Black / Red (optional) Size: 81.5 * 105mm / 3.2 * 4.1in Weight: 275g / 9.7oz Package List: 1 * Pair of Bike Pedals