These bike stabilizers are essential for any child's first bike-riding experience. The construction and wear-resistant materials ensure use, even on rough terrains. Simply attach the training wheel to the rear wheel of the bike, and your child will be with added support and balance, making the learning process enjoyable and safe. Features -Color:Multi -Material:Carbon Steel, PU -Size: 21.00X11.50X11.00cm/8.25X4.52X4.32in -Nighttime visibility: the universal training wheel come with glowing elements that enhance visibility during nighttime rides, providing an added layer of safety for your child -Quick detachability: these bike training mute wheels are designed for easy attachment and detachment, allowing for quick adjustments and easy storage -Enhanced stability: the bike auxiliary wheels offer stability, helping children maintain balance and build confidence as they learn to ride -Robust design: constructed with heavyduty materials, these replacement bike wheels are designed to endure the rigors of daily use, ensuring they remain functional and reliable -Versatile use: suitable for various types of bikes, including electric and dirt bikes, these training wheel for kids bike offer versatile application, making them a practical choice for different riding needs Package list: 2 x pairs of bike side wheels