Features1 Aluminum Alloy Material: This bike crankset is made of aluminum alloy, anti erosion and wear resistant and sturdy. 2Finishing Stripes: This bike crankset utilizes a multiple stripe mounting system that allows for more direct cranking power. 3CNC Accurate Milling: This bike crankset is CNC milled for high strength and accuracy, so that it can be used for high strength operations such as mountaineering and cross country riding, and the forces are evenly spoon fed for a stable ride. 4Anodized Surface: The surface of this bike crankset is anodized, which can effectively protect the aluminum alloy body. 5Internal Weight Reduction Design: This bike crankset is designed with internal weight reduction to make the cranks lighter in weight and easy to maneuver.SpecificationItem Type: Bike Crank Arm SetMaterial: Aluminum AlloyPackage List2 x Crankset Assembly