Made of nylon plastic with flame resistance, safe, environmentally, Anti-aging, not easy to break. Widely used in household, construction, electronic, auto, cable and wire assembly, can be used to bundle and sort various cables and wires, such as the fixing of wires of lighting, oil pipelines of mechanical equipment, etc. Made of self-locking with push mount design, easy to use,the gears are clear, good insulation and durability.