【NOTE: 10mm U-Slot】-- Installing the rear pedal is easy. Simply attach it to your bike's rear axle and secure it with a locking screw for added stability. Please note that the foot clamp is 10mm, so check the size of your mounting bolts before installation. 【Foldable Design】-- Our rear bike pedals feature a unique foldable design, making them easy to fold and store to save space. When not in use, simply fold them up to minimize bulk and maximize convenience. The folding feature ensures that no objects or people will get scratched while riding without a passenger. 【Improved Comfort and Stability】-- Measuring 11 x 4.5 cm when unfolded, these small rear pedals serve as excellent footrests for passengers sitting on the back seat of your bike. They effectively protect your feet from contact with the car wheel, increasing safety. Additionally, these pedals offer extra comfort, allowing you to sit relaxed and comfortable on long rides. 【Durable and Lightweight】-- Made of high-quality aluminum alloy, they are lightweight and durable, with high strength for a long lifespan. The 16mm thickness design improves load-bearing capacity, even when standing on them, while maintaining good stability. 【Versatile and Anti-Slip Compatibility】-- The pedal surface features grooved treads, and this anti-slip design allows you to stand on the pedals confidently without worrying about them slipping. Our rear bicycle pedals are suitable for most e-bikes, mountain bikes, road bikes, and more.