1. Easy to solve all kinds of complex pipe threading 2. Punching machine crimped steel head, enhance wear resistance, high hardness, not easy to fall off 3. Round and smooth head, crimped firmly, not easy to take off 4. 4mm solid wire diameter, strong flexibility, soft and hard moderate, smooth and unhindered through the pipe three-strand plastic steel screwing, tensile force is not easy to break, durable anti-aging, strong resilience 5. Flexible spring head, high-strength toughness spring design, bend more easily and labor-saving 6. Round head aperture is slightly smaller, strong bending capacity (round head is more suitable for smaller aperture pipe) 7. Flat head with a larger hole diameter, you can pull more wire, but also better bundled wire (flat head is suitable for tubes with a larger hole diameter) 8. Length: 5/10/15/20/25/30m
