1. It's adjustable and fits bicycles sized 16-22inch, you can adjust it fit bike of your kids 2. It ensures your kids' safety and prevents accidental injuries when learning to ride 3. Providing more confidence for your kid to learn to ride bikes while they know they are safe, which enhances their learning efficiency 4. Fittings are supplied for easy installment 5. Strong metal supports to give extra stability and security Spec: Description: This practical training wheel is suitable for bicycles from 16inch to 22inch, which aims to provide the necessary security and stability for your kids while leaning how to ride a bike. Easy to install and safe to use, good for making your kid feel more confident when they ride bicycle. Features: It's adjustable and fits bicycles sized 16-22inch, you can adjust it fit bike of your kids. It ensures your kids' safety and prevents accidental injuries when learning to ride. Providing more confidence for your kid to learn to ride bikes while they know they are safe, which enhances their learning efficiency. Fittings are supplied for easy installment. Strong metal supports to give extra stability and security. Specification: Material: Plastic + Iron Color Options: Silver; Black Fit For: 16-22inch Bikes Wheel Size: Approx. 13 x 2cm / 5.12 x 0.79inch Bracket Size: Approx. 21 x 10.5cm / 8.27 x 4.13inch Weight: Approx. 1130g Packing List: 1 x 2Pcs/Pair Training Wheels (With Fittings) Notes: 1. The training is a consumables, suitable for kid under 30kgs. 2. Please notice that don't make training wheels and rear wheel stand on the ground together, one of the training wheel should be 1 or 2cm higher above the ground.