I really like these magnets. I put two on the fence post and two on the gate. The four magnets have a bout half inch of air space between them and they have enough attraction to keep my sport court gate closed even in strong winds and even when a basketball bounces into the gate. The only downside to these magnet is, they are very brittle. And if you’re not careful putting them together in a stack, the attraction force will bring them together so fast that they will break at the **** hole. I don’t think I would buy the ones with the **** holes again unless I am attaching them to a non-ferrous metal. I would definitely buy the solid magnets. They are awesome.