About this item Bike support wheels– bike support wheels– this set of stabilizers assist kids learners, until they have developed a usable sense of balance on the . Adjustable kids bike training wheel– stabilisers for childs bike– wheels diameter: 5 inch. universal training wheels fits for 12/ 14/ 16/ 18/ 20 inch children s bicycles. Adjustable bicycles stabilizer– function: training, bike balance. 20 training wheels for bike– bell training wheels: this training wheel is specially designed for kids bike, which will make more stable and balanced. Adjustable training wheels– kids training wheel– training stabilizer style: universal.