just realized you said 1/2" but i dunno if they make a size smaller than 1. also, i think i got them at BPS and it was only a 50 pack but still only $5. i can tell you that they're pretty small but i used them for regular size bass gear like cranks and bigger spoons.
sort of like a drop shot but for a reaction bite. or when they're schooling up or crashing through bait. drop it right down there and snap it up making sure it stays around where they are...so not jigging it in the 10-20' zone if they're 30-40' deep. you get the idea.
no problems yet for me but i haven't used it for a long time yet. i bet most painted blades lost paint after a bit though. i usually use silver too so it's not as much of an issue. damiki vault is good as well. stock hooks suck more than usual though.
I haven't used enough to see issues. Silver/chrome is the binsky model that chipped real easy for my friends.
I use a pewter version a friend custom makes on the side.