** box is damaged but all contents are in good shape. The Heavy Duty Training Wheels Pair is designed to fit 20-24 inch multi-speed bikes, providing stability and support for new cyclists. Made of durable alloy steel with a carbon steel exterior finish, these 6-inch wheels have a rim size of 24 inches and a rim width of 2 inches. The black-colored training wheels come with tools for easy installation and have a vehicle-specific fit for optimal performance. With a weight of 2.36 kilograms and a compact package size, these training wheels are a reliable accessory for cyclists looking to improve their skills and enhance their cycling experience.