Description 100% brand new, high quality Color: black, red, blue Material: aluminum alloy Dimensions: 100 mm / 3.94 inches × 28 mm / 1.1 inches × 9 mm / 0.35 inches Quantity: 1 pair Large hole style, no need to distribute screws and tools, installation opening is 9mm. According to the bicycle industry standard, the specification of the bicycle rear axle is m10 * 1 (the actual measurement diameter is about 9mm), that is, the rear wheel of the bicycle cannot be released quickly, it is fixed by screws. It can be installed in accordance with bicycle industry standards, but it can be installed in accordance with bicycle manufacturing standards, but there is no guarantee that all cars can be installed (depending on actual measurement results). The exhaust length of the rear axle is 6mm or longer and can be installed directly. If the length is not enough, you can remove the nut and screw the pedal directly into the replacement nut. Quality first, provide the best service. Customers are our friends. Stylish design, 100% brand new and high quality! Note: 1. For photos, please allow slight color difference 2. Due to manual measurement, the size may be different Package Included: 1 pair of bicycle legs