Product Name: One-Piece Crank Replacement Part Compatibility: Specifically designed for RoyalBaby kids' bicycles with one-piece crank systems, compatible with many other children's bikes using similar designs. Material: High-strength steel Size: Suitable for 12, 14, 16, 18, and 20-inch bikes Color: Black or Silver Features: Sturdy Construction: Made from high-strength steel, this one-piece crank provides exceptional durability and is built to withstand regular use by active young riders. Integrated Design: The one-piece crank design combines the crank arms and spindle into a single unit, ensuring a robust and reliable connection for smooth pedaling. Rust-Resistant Coating: Features a rust-resistant finish to enhance longevity and maintain performance in various weather conditions. Easy Maintenance: The simple design makes it easy to install and maintain, reducing the need for frequent adjustments. Package Includes: 1 x One-Piece Crank Installation Note: Installation may require specific tools, such as a crank removal tool and wrench. For best results, ensure proper fit and alignment with the bike's bottom bracket. Safety Note: Periodically inspect the crank for signs of wear or damage. A well-maintained crank ensures efficient pedaling and reduces the risk of mechanical failure. Ideal For: Parents and bike technicians looking for a durable and reliable replacement for a worn or damaged one-piece crank on a child’s bike, ensuring continued safety and smooth operation.