The Schwinn Vintage Training Wheels are designed to fit most 16" to 20" bicycles, featuring adjustable rubber wheels for smooth operation. This set includes instructions, a pair of training wheels, and all necessary mounting hardware for easy installation. With a vintage design and durable construction, these training wheels are perfect for beginner cyclists looking to enhance their cycling experience. The Schwinn brand ensures quality and reliability, making these wheels a popular choice for indoor and outdoor training.