Description Your child's safety is our concern. Make our heavy-duty train wheels with special attention to stability, the wheel design is thicker than the ordinary train wheel and added a small bracket that it's more stable, for your peace of mind. Features -Color:White -Material:Plastic -Size:10.50X10.50X3.00cm/4.13X4.13X1.18in -This balance wheels can be adjusted at any time according to the skill and level of the train. -The train wheels for kids bike have the function of slips-proof and noise-free for a safer, easier ride. -So that your child can be safer and smoother when riding, without any worry or fear. -Our bike train wheels can be installed onto your child’s bike quickly and simply. -It can be adjusted at any time according to the skills and levels of the children. This balance wheels can be adjusted at any time according to the skill and level of the train. The train wheels for kids bike have the function of slips-proof and noise-free for a safer, easier ride. So that your child can be safer and smoother when riding, without any worry or fear. Our bike train wheels can be installed onto your child’s bike quickly and simply. It can be adjusted at any time according to the skills and levels of the children.