Product Description：

it is  screw-in "self-cutting" fit. Thanks to its threades ridges, it works indepently of the screw thread.

To be used in bridges that need to withstand vibration, guard rails, rail ways, road facilities and other varieties of iron structures.

Extreme intensity (high intensity) reflective tape is applied to the external surface to prevent accidents and ensure the safety of the drivers.

Keywords： Bolt loosening and Corrosion Protections,Screw type Bolt Corrosion Protections Caps

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