Safety and balance support: Training wheels provide a safe learning environment for young cyclists, helping them develop a reliable sense of balance and gain confidence while riding independently.Perfect combination: This set includes 2 shoulder screws, 2 washers, 2 lock nuts, 2 limit washers, and 1 wrench. Adjustable height options allow for quick and easy installation on most bikes.Universal compatibility: Featuring a bracket with five hole positions, these training wheels fit 12, 14, 16, 18, and 20 inch children's bicycles, compatible with both single-speed and multi-speed models.Robust and slip-resistant design: Constructed from high-quality plastic and rubber, these training wheels offer excellent traction, wear resistance, and stability. Dual high-performance steel bearings ensure smooth, quiet, and long-lasting performance.Effortless installation: Made with durable ABS wheels and strong steel construction, these training wheels are built to provide reliable support, safety, and stability for children learning to ride.Safety and balance: Helps children maintain balance and learn to ride confidently and independently.Easy installation: Includes all necessary hardware and tools for fast setup with adjustable height options.Durable materials: Non-slip rubber and wear-resistant plastic ensure a stable and quiet riding experience.Durable construction: Double steel bearings and ABS wheels enhance stability, durability, and safety on every ride.