Heavy-Duty Stability These training wheels are designed for durability and extra support for beginners. Their reinforced steel brackets and thick rubber wheels provide a steady, wobble-free experience on various surfaces, including pavers, grass, and gravel. Adjustable Fit Fits most 12 to 24 inch bikes and is suitable for kids and adults. The adjustable arms allow for a custom height to ensure the perfect balance and reduce the risk of tipping over while riding. Easy to Install and Remove Simple mounting system allows quick attachment or removal without professional help. The kit includes all necessary hardware and clear instructions, so parents and riders can set up the wheels without assistance. Reinforced Metal and Premium Build Constructed with high-quality reinforced steel and rubber wheels, these training aids are built to last. They withstand repeated use and rough riding conditions, providing long-term reliability and a smooth, safe cycling experience for beginners. Use scenarios - A child learning to ride at home or in the park: easy to install on a compatible bike, allows steady practice with added confidence. - Siblings or multiple riders: quick swap between bikes without specialized tools, enabling incremental training for different users. - Adults returning to cycling: provides stable support during balance practice on casual rides, helping build confidence before removing the wheels.