The Craftsman 13 pc Bit Driver Set (model 47227) is a versatile and practical tool set designed for use with a variety of screws and nuts. The set includes a mix of driver and bit types, with a total of 6 pieces included. The set features a magnetic head for easy bit retention, a ratcheting ring for added versatility, and built-in storage for easy organization. This set is perfect for DIY enthusiasts and professionals alike, providing the necessary tools for various repair and maintenance tasks around the home and garden.