Review on Sutekus Aluminum Tent Poles Kit: Adjustable Replacement Accessories for Camping Shelters, Canopy Awning Support - Includes 2 Poles by Jesse Stewart

I like that they have buttons that pop out through each section when assembled, rather than springs like tent poles. I think that makes them safer. I would ask you to make a threaded element out of the upper part, to which you can attach a large nut, so that the tarpaulin does not explode and jump off the racks. Or maybe a hole in that top spike to put something blunt through to keep the tarp from detaching from the posts. In a windy camping situation, I could see a tarp snap from a pole and cause disaster when that corner of the tarp began to whip.