Cushioned Wall Fastener, 1/2" (aka 1/2" Wiring Clips)
Commonly used on aluminum & steel horse trailers in light applications to hold steel rings and double-ended snaps for corner feedbags, window screens and for holding trailer dividers in a open position. The remarkable thing is that it uses only one screw or rivet, so there are less holes in your trailer. The metal portion is steel, with a non-corrosive zinc finish. The liner is neoprene. When closed, the inside opening is shaped like a teardrop, with a vertical measurement of 1/2".
We like pairing this product with a steel ring, because it makes it easy to attach snaps or zip ties. (see below)
Also we like this product because it can be easily installed at a diagonal angle.