Super cheap packaging on these. They were shipped in a thin plastic bag- the kind used for T-shirts.
I pulled two units out of the bag- and discovered both have bent prongs. That’s a difference between them and t-shirts- they don’t survive bearing any substantial mass well.
Also- thanks to being mistreated in transport, the bag damn near tore open. I was lucky the contents didn’t spill out.
Other than the prongs, these things are sturdy. They feel like the kind of equipment you’d expect to see at a construction site.
PS- don’t expect to hack these. They’re solid molds of… whatever this is- hardened rubber? You could cut through them, but I expect that’d be the end of them.