【Note: 15mm U-Groove】--The rear pedal is easy to install. Simply attach it to your bike's rear axle and secure it with the locking screw for added stability. Please note that the foot clip is 15mm, so check the mounting bolt size before installation. 【Foldable Design】--Our rear bike pedals have a unique foldable design, making them easy to fold and store, saving space. When not in use, simply fold them up to minimize clutter and maximize convenience. The folding feature ensures that no objects or people will get scratched when riding without passengers. 【Improved Comfort and Stability】--These small rear pedals have an unfolded size of 11 x 4.5 cm and can serve as excellent footrests for passengers sitting on the back of the bike. They effectively protect your feet from contact with the wheels, improving safety. Additionally, these pedals offer extra comfort, allowing you to sit comfortably on long rides. 【Durable and Lightweight】-- Made of high-quality aluminum alloy, they are lightweight, durable, highly resistant, and have a long lifespan. The 16mm thickness design enhances load-bearing capacity and maintains good stability even when standing. 【Anti-Slip and Multifunctional Compatibility】-- The pedal surface features grooved treads. This anti-slip design allows you to stand confidently on the pedal without fear of it slipping. Our rear pedal is suitable for most electric bikes, mountain bikes, road bikes, etc.