• HIGH QUALITY: The powerful magnetic force is only concentrated at the bottom, The other three sides are Protected by steel cups that almost no magnetic force and magnetic force equalent to 10 times the volume of the same magnet. force permanent, long service life. • BEST COATING: Ni+ Cu+ Ni Triple Layer Coated. The Best Coating Available, which Provides a Shiny and Rust Resident Coated steel cup provides protection for the magnet and helps to prevent chipping or cracking.