The Tolsen 20049 is a set of nine extra-long arm hex keys designed to help you reach deep-set fasteners and apply more torque during tightening or loosening. These tools are crafted from heat-treated chrome vanadium steel and finished with a satin chrome plating, which helps protect the metal from wear and corrosion over time. This kit includes a comprehensive range of sizes from 1.5mm up to 10mm, all organized in a foldable plastic holder for easy storage and quick selection. Weighing 0.44 kg, the set is practical for both home repairs and professional mechanical work where precision and leverage are needed.