The silent operation of our trainer wheels for kids bike ensures that your child's ride is peaceful and enjoyable. Made from metal, these training wheels are built to last. They are versatile and can be used with different types of children's bicycles, offering easy installation and removal. These wheels support children in learning to balance and ride, promoting safety and enjoyment. Features -Color:Black -Material:Metal -Size:16.00X6.00X3.30cm/6.29X2.36X1.30in -Size:4.50X2.50X2.50cm/1.77X0.98X0.98in -Silent operation: the quiet design ensures that the training wheels do not create any noise, allowing for a peaceful riding experience -Safety enhancement: the auxiliary wheel pin provides an extra layer of safety, making the bike more stable for young riders -Balance training: these training wheels are ideal for helping children learn to balance, making the learning process smoother -Durable construction: made from metal, these training wheels are designed to last, providing reliable performance over time -Easy to use: these training wheels are easy to install and remove, fitting a wide range of children's bikes for maximum versatility Package list: 2 x Bike Training Wheels Bar 2 x Screws