My wife has a vintage Seiko that she absolutely loves. Only problem is our watchmaker didn't replace her spring bars as he said he did, or he replaced them with subpar components. At any rate, I ended up having to order these after hers snapped in half leaving the bracelet detached. I have a larger set on a watch that is known for bending spring bars and I haven't had any problems so I gave these a shot. She has not had any further problems with her bracelet. These far exceed the quality of the original spring bars.