If you’re doing blend, then the gold are just fine. For thermolysis however an insulated probe is the only way to go, especially someplace like the brows. Ballet DO make insulated one-piece probes, whether they would in a k-shank I’m not certain
Edit: they do!
I use thermolysis, and sometimes flash mode. I was using K2 GOLD needle on brows. Thank you for your precious informations 
hey! i also live in turkey, i’m a customer though, not an electrologist. where are you based in?