This Brontosaurus pin is a perfect gift for paleontologist and dinosaur fanatics. Each pin is double tacked (military style) to avoid spinning. We only use strong neodymium magnets for a powerful grip. Proudly crafted by American Artists. After casting, each piece is hand finished and polished for a beautiful antique look. Satisfaction Guarantee! There is much debate on whether the Brontosaurus is real or not. One year it is believed that the bones where cobbled to from many dinosaurs the next year more complete skeleton are discovered making the Brontosaurus real animal again. Either way, it was a large stout herbivore and would have used its large tail like a whip to defend itself.