Shimano SG-7C22 is a bicycle hub with an integrated coaster brake and 7-speed Inter-7 shifting system, designed to provide smooth and reliable shifting and braking performance. It features a durable construction, easy installation, and compatibility with a wide range of sprockets and brake levers. The SG-7C22 is suitable for various types of bicycles, including city bikes, hybrid bikes, and touring bikes, and is known for its user-friendly design and low maintenance requirements.