[Brass bullet head] The bullet body is made of brass Wear-resistant and scratch-resistant, German craftsmanship, refined polishing by imported professional machines Oil edge polishing design, three-dimensional shape, bright surface, outstanding quality Exquisite workmanship of bullets, more colorful and attractive High-density spring stainless steel The spring is made of imported stainless steel High elastic spring, precision pressing, firm and durable Can be bent at any angle, better penetration of right-angle and curved pipes Improve work efficiency and easy to use [Strong nylon main body threader] The main body is made of new nylon material import The surface is smooth and comfortable, with medium hardness and high flexibility. Strong penetration Easy and simple right angle bend Make wiring faster, less laborious and worry-free [Tail bomb - pure copper] The warhead is made of pure copper More durable than alloy and aluminum bullets, precision six-sided stamping of the machine tool Not easy to fall off, avoid falling and blocking the metal tube during the drawing process. Highly cost-effective Operation method First, arrange the metal tubes with a reasonable orientation (it is better to use a curved bender at the elbow) to fix the metal tubes. Then use the end of the threading head (with spring) to pass through the coil and pull out a small length of threading the other end of the spool. Next, tie the wire or cable that is to enter the conduit to the end of the threader (preferably using "Holla aka 'Tie-down'"), if applicable Multiple wires are to enter the same conduit, they should be twisted together and tied with tape. Finally, one person pulls the threader from the head to the end, and the other person slowly slides the wire into the metal tube at the tail. Specification: 3mm x 10m.