SUPERIOR MAGNETS COATED Black magnetic hooks are coated with three layers of Black epoxy Nickel Copper, which provides a shiny and rust resistant coated steel cup provides protection for the magnet and helps to prevent chipping or cracking.
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Waterproof Neodymium Magnet – High Holding Power
Nice DesignThe round countersunk hole magnet cup design increases the beauty of the product, the steel shell concentrates the strong magnetic force on one side only, the other three sides are almost non-magnetic, well greatly increase the holding power.