U_Stormcrow
Crossing the Road
I should note they also make grey nylon/plastic ones. They are cheaper. DO NOT use them. A screw with good purchase will pull right thru one - meaning a good wind on all the surface area you are about to make with metal roofing will concentrate a lot of force where the screw head meets the plastic pipe strap.
That doesn't end well for you.
That doesn't end well for you.