Description: 【Product】Innovative double spring locking system allows secure attachment to 86/118 type wall boxes, enabling single person operations without the need for an assistant and freeing both hands for efficient wire threading 【Multi Functional】Wire Threading Aid combines an adjustable wire threading aid with a slip resistant pulley, streamlining the process by eliminating tool changes and providing smooth guidance and support for pulling wires into wall boxes 【Wire Protection】Features rounded edges and anti slip textures at all contact points to prevent cable scratches, snags, or slippage throughout guiding, pulling, and fixing stages, ensuring cables remain intact and installation is professional 【Stable and Secure】Equipped with high strength anti slip serrated surfaces and double-spring pressure at the base for firm locking onto wall boxes; guarantees stability during wire pulling without shifting or slipping 【Portable Durability】Constructed from premium stainless steel and engineering plastic for long term strength while remaining lightweight; ideal for electricians to carry-the-go for various wiring tasks Specification: Material: Stainless Steel Size Chart: 6.8cmx9cmx8.5cm/2.68inchx3.54inchx3.35inch Package Includes: 1 Piece Wire Threading Aid Tool Note: Please allow slightly errors due to manual measurement and different monitors.