When I first started detecting, many moons ago, I bought a Tesoro Bandito. I had a hit in a state park beach in eastern Pennsylvania. This target was deep and I foraged around in the sand trying to figure out what was giving me this insanely strong signal and I kept coming up with handfuls of sand and nothing to show for it. Finally, fifteen minutes of sifting through the sand, I found a solid gold ear ring that was one of this little round balls on a stainless post. The gold ball was about the size of a BB and the post, perhaps a half-inch long with no clasp on it. I found the clasp in the same hole about five seconds later. That is why a pin-pointer can keep you from pulling your hair out.