Safety and balance support: Training wheels create a safe learning environment for young cyclists and help them develop a reliable sense of balance on the bike. Children can gain confidence in their cycling skills without needing support from an adult.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.Robustness and slip resistance: Constructed from high-quality plastic and rubber, these training wheels offer slip-resistant and wear-resistant performance for a stable ride. Double high-performance steel bearings ensure smooth, quiet, and long-lasting operation.Effortless installation: Made from durable ABS wheels and strong steel, these training wheels provide excellent traction and stability. Designed to support safe and confident riding for children.Safety and balance: Helps children maintain balance and learn to ride independently.Easy installation: Includes all necessary hardware and tools for fast setup with adjustable height options.Durable materials: Non-slip rubber and wear-resistant construction ensure a stable and quiet riding experience.Durable construction: Double steel bearings and ABS wheels deliver lasting stability, durability, and safety.