Bike train wheel, also the bike stabilizer, which is a good helper for beginners to reduce their fear and gradually learn to keep their bike balance. Made of stable and sturdy material, much stable and safe to use. special attention to stability when building heavy train wheels, and the vertical support arm is designed to be thicker to support. Features -Color:As shown -Material:Metal, plastic -Size:11.00X11.00X2.00cm/4.32X4.32X0.79in -Size:22.50X9.50X3.00cm/8.84X3.73X1.18in -Increase the span of the bracket to prevent the bike from rolling over, just to protect the children -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 and smoother when riding, without any worry or -Our bike train wheels can be installed onto your child’s bike quickly and -It can be adjusted at any time according to the skills and levels of the children. train wheels can be adjusted at any time according to the skill and level of the train. Package list: 2 10 x accessories 1 x wrench