Add stability to your child's bike with the Raskullz Street Training Wheels. These yellow training wheels fit most 12" - 18" bikes and are made of durable plastic and metal materials, ensuring that they are weather resistant. The set includes attachments for easy installation. These training wheels are perfect for beginners and best for improving balance. They are suitable for outdoor use and are not signed. The Raskullz brand ensures high quality and the product is made in China. Purchase this unit to help your child learn to ride with confidence.