Spring Steel Threading Devices – cable, network cable, wire, concealed metal threading devices, electrician pulling devices, short distance pulling devices. Easy to Solve Wiring Problems – effectively handles various complex pipeline wiring tasks, including under-floor wiring slots, ceiling pipelines, wall pipelines, and network cable installations. Material – constructed from spring steel with three layers of solid springs, offering strong resilience, high bending strength, extended length, and excellent toughness. Capable of 360° rotation with no dead ends, suitable for multiple right-angle bends, ideal for challenging wiring routes. Flush Hook Cable – features a large aperture designed to accommodate multiple cables at once, making cable tying easier and more efficient. Suitable for wiring and installation in large diameter pipes. Applicable Pipe Diameter – wire diameter 4.02mm, compatible with various PVC pipes, plastic pipes, and metal pipes. Suitable for standard indoor wiring applications where bare wiring is not permitted. SPECIFICATIONS Material: Three-layer solid spring Wire diameter: 4mm Length: 5M (16.4ft) PACKAGE 1PC Universal Wire Lead Threading Device Tool