The Rack Solution Cage Nut Tool features a 5.4" length and is constructed from stainless steel with a hard plastic covering. This tool is designed to simplify the process of installing or uninstalling cage nuts, preventing damage to your fingers. It includes a convenient 'U' space size reference guide on the back and has three holes (10 - 32, 12 - 24, and M6) that are clearly labeled for easy identification of screw sizes. This tool is not only practical but also environmentally friendly, complying with the Restriction of Hazardous Substances (RoHS) standards.