The RyMarCool Ultra Bit Extension Set is a comprehensive toolkit designed for mechanics, HVAC technicians, and professionals in various trades. This versatile set includes a 4-inch hex-bit extension, a 6-inch hex-bit extension, a right-angle extension bit, and socket extension bits in sizes 1/4-inch, 3/8-inch, and 1/2-inch. It also features magnetic nut driver bits in 1/4-inch, 5/16-inch, 3/8-inch, 7/16-inch, and 1/2-inch sizes. To keep your bits organized and easily accessible, the set comes with a Quick-Release holder equipped with a carabiner. Whether you're working on impact drills, tight spaces, or intricate projects, this extension set provides the necessary tools to tackle any job with precision and efficiency. With its durable construction and practical design, the RyMarCool Ultra Bit Extension Set is an essential addition to any professional's toolkit.