SUPER STRONG CUP MAGNETS 1 Strong Magnetic Hooks 2 Fishing Magnets Kit 3 Rare Earth Bar Magnets 4 Neodymium Disc Magnets 5 Pushpin Magnets. Search MIKEDE MAGNETS. Find the strong magnets you want! 【More Sturdy than Others】- These countersunk magnets with hole are made of NdFeB material with a nickel-plated coat for maximum durability and protection against corrosion.