Material: Our support wheels are made of high quality plastic and metal, which increases the stability and safety of the bike, ensuring the safety of children. Designed for cycling, especially for beginners. Help the learners to develop a sense of balance on the bike. EXCELLENT SAFETY PERFORMANCE: Our heavy-duty rear wheel support wheels can provide the safety and stability you need for your first test drive. Letting kids drive more confidently is the best place to start trusting kids. Easy to Install: Our support wheels are easy to install, and provide various accessories, simple installation methods, parents can easily install, bring children a happy childhood! Application: Suitable for all 12-20 inch bikes, adjustable. You can adjust the size to suit your child's bike. Quality Assurance: If your expectations are not met or you have any quality issues, please contact us. product ription description: -High Quality Materials: Our training wheels are made of high quality sturdy material and strong and durable metal brackets, which can improve the stability and safety to ensure the safety of children. -Integrity and stability. If you can get your kids to drive more confidently and help them gain confidence. -Suitable for beginners: Training wheels can help children learn to ride a bike more safely, it is the choice of beginners. At the same time, it allays the worries of parents. Suitable for all auxiliary wheels 12 to 20 inch bikes. -Easy to Install: Our training wheels are easy to install and provide various accessories, so you just need to install the training wheels with brackets to let your kids use the bike safely . Method simple installation, parents can easily install, bring children a happy childhood! specification: Material: plastic or metal Pink color, Installation notes: 1. Thread the screw through the wheel, washer and support arm. 2.Install and tighten the washer and nut. Two keys are needed to improve this property. 3.Remove the nut from the rear axle of the bicycle wheel. 4. Thread the axle through the lock washer, then attach the raised points to both ends of the bike frame. 5. Determine the ideal height of the support wheel during installation. The jockey wheels should be about 0.5 to 1 cm above the ground. 6. Tighten the axle nut with an adjustable wrench. Note: Clear and different display may cause slight color difference of the item in the image compared to the actual object. The measurement error