Description: 【 Wire Threading Tool Helper】: This tool is designed specifically for electricians to assist in threading wires through bottom boxes and sockets. It features a smooth pulley system that allows for quick and efficient wire pulling without causing any damage or tangling to the wires. 【High Efficiency】: The smooth pulley system not only prevents wire damage but also significantly improves the efficiency of wire threading, saving time and effort. Wire threading auxiliary pulley is designed to be user friendly and can be operated easily by a single person. 【Universal】Single wire threading aid tool fits for 86 and 118 bottom boxes. 【Durable Mateiral】Wire threading aid tool is made of quality aluminum alloy material, durable and sturdy, equipped with a high strength spring that is resistant to pressure and deformation, providing stable force during use,can be used for a long time. 【Portable】The tool is 9.8cmx7.3cmx8cm/3.86inchx2.87inchx3.15inch, compact size, lightweight and portable, easy to use. Specification: Material: Aluminum Alloy Size Chart: 9.8cmx7.3cmx8cm/3.86inchx2.87inchx3.15inch Package Includes: 1 Piece Wire Threading Aid Tool Note: Please allow slightly errors due to manual measurement and different monitors.