I have some 30 ish year old micros, I think they are Wild Country Stones, not made any more.
They look made in a similar style to Rp type nuts, with the wire welded / soldered into a brass type head, but have one flat side, the biggest, then a curving depth into the smaller flat side, so that the smaller side has rounded edges. They also taper from top to bottom forming a sort of u or v shape hybrid. Hope that makes sense!
They all have shiny wire...stainless steel?
I have the no.5, has 3mm wire? (fatter than rock 1 wire) blue plastic wire coating on the loop end, which is about same size as a rock 1 in depth, and a little less in width, the no.3 yellow has wire about rock 1 size 2.5mm?, and no.2 red, is maybe on 2mm wire. I lost the no.4
Does anyone know their relative breaking strengths? Where they break and why / when they stopped making them?
I've read that they are a bit weak compared to other options, so might decide to replace them, but did safely slump + lower off on the no3 last year.