Specification: Product Name: Wire Lead Threading Device Tool Wire diameter: 4mm/0.16in Specifications: [double flat head], [flat head + pulley head] Length: 5M(16.4ft)/10M(32.8ft)/15M(49.2ft)/20M(65.6ft)/ Description Flexible Spring Head for Easy Bending: The Ring Buckle Umbrella features a high-strength, flexible spring head that allows for effortless bending and maneuvering. Whether you're navigating tight spaces or complex angles, this design ensures smooth and labor-saving operation Secure Construction Built with advanced stamping technology, this umbrella is tight, firm, and resistant to turning or falling off. Its professional-grade materials ensure long-lasting durability, even in challenging conditions 90 Right Angle Bend Compatibility: Designed to handle both small and large tubes, this umbrella excels at 90 right angle bends. Its silky-smooth threading capability makes it perfect for quick and efficient wire pulling in concealed tubes Pulley Head for Enhanced Guidance: Equipped with a pulley head, this umbrella effortlessly guides wires through various complex bends. Its innovative design ensures seamless tube threading, even in the most intricate setups Versatile & Professional Tool Ideal for electricians and DIY enthusiasts, the Ring Buckle Umbrella is a must-have for wire threading tasks. Its combination of flexibility, durability, and ease of use makes it a reliable choice for both small and large projects Packing List: 1 x Wire Lead Threading Device Tool