The Tolsen 20057 is a nine-piece set of extra-long arm Torx hex keys designed to help you reach fasteners in deep or cramped spaces where standard tools cannot fit. Each key is crafted from heat-treated chrome vanadium steel and finished with a satin chrome plating, which provides the necessary durability and resistance to corrosion for long-term use. This set includes a comprehensive range of sizes, from T10 up to T50, making it a versatile choice for those performing electrical, industrial, or transport maintenance. Whether you are working on professional projects or handling home repairs, the extended length of these tools allows you to apply torque more effectively in hard-to-reach areas. The keys come organized on a blister card for easy storage and quick identification of the required size.