Dimensions: Our wheel diameter is 4.33in and the thickness is 0.98in ,Training wheels is suitable for 12" 14" 16" 18" 20 "Single Speed Bike, you can adjust it fit bike of your kids
Easy to Install: The training wheels are easy to install and remove, allowing parents to adjust the height as their child grows. The wheels are equipped with rubber tires that provide a smooth and comfortable ride
Anti-slip Design: These heavy duty rear wheel are very sturdy and durable. Low-noise wheels are more wear-resistant, quieter and safer. Includes a pair of children's bicycle wheels, brackets and mounting kits
Sturdy Frame: Our training wheels are constructed with a sturdy frame that can withstand the weight and impact of outdoor use. The frame is designed to provide a stable and secure ride
Function: These heavy-duty rear wheels provide the necessary safety and stability needed for the first road test of the bicycle, so that your child can get the best start of balance and confidence without holding the saddle