Description Bike training wheel, also known as the bike stabilizer, it is a good helper for beginners to reduce their fear and gradually learn to keep their bike balance. This bike training wheel is made of rubber and iron material, for beginners, it will be safer, more stable, light weight and it is very unique because of flashing design Features -Color:Black -Material:Rubber, iron -Size:11.00X11.00X2.00cm/4.32X4.32X0.79in -Application: Compatible with 12 inch, 14 inch, 16 inch, 18 inch, 20 inch bike -The wheels made with a thickened design that adds unprecedented stability and safety. -Easy to install, includes everything you need to install, suitable for 12-20 inch children's bikes. -The overall training wheels are thicker, stronger and easier to install than regular wheels. -The luminous design of our training wheels can make children more interested in outdoor sports. -Effectively help your child learn to ride a bike, improving your child's safety and confidence. The wheels made with a thickened design that adds unprecedented stability and safety |Easy to install, includes everything you need to install, suitable for 12-20 inch children's bikes |The overall training wheels are thicker, stronger and easier to install than regular wheels |The luminous design of our training wheels can make children more interested in outdoor sports |Effectively help your child learn to ride a bike, improving your child's safety and confidence