Bike 12-20 SIZE kids bike balancer auxiliary wheel silent flash training wheels Pedal

Product name: General purpose training wheels with bracket Material: high carbon steel + colored PU auxiliary wheels Usage: children's Scooter, Mounted on a 12-20 inch children's bicycle,No battery, no charge, no rotation Silent flash wear and skid resistance Wheel size: 11cmx2cm Applicable age: 2-16years old This product is suitable for 12.14.16.18.20 inches children's bicycle.Bicycles, folding bicycles, no need to look at the size of children's bicycles.Important reminder;A car with no training wheels.Confirm that there is no redundant installation place of about 1CM on the side of the rear axle, if you don't know what to ask customer service;