Type 76, Stainless steel set screw for tubefittings Ø42,4/Ø48,3/Ø60,3

Black, mounting screw cap
The advantage of black color is that the color goes very deep into the material, which prevents the pipe member from corroding too quickly.
The black clips are also suitable for outdoor use, but it must be taken into account that the color is not resistant to UV radiation, and long-term exposure of the product to outdoor conditions will cause the color to fade.