【MAGNETS COATED】Strong neodymium cup magnets with holes are coated with three layers of black epoxy+ nickel+ copper, so they provides a shiny and rust resistant protection for strong magnets heavy duty.
The big block magnets are Ideal for DIY craft projects, science project magnets. Use these cube magnets for anything, including finding studs in your wall, fastening, lifting, hanging objects, various projects & presentations, education, & more
We are a magnet supplier with professional strength. You can certainly find strong cup magnets with holes you want in my shop! If you need mass customization of rare earth magnets heavy duty, contact us and we can meet your needs.
Our heavy duty strong magnets are made from strong neodymium-iron-boron alloy (NdFeB) and have a stylish nickel coating (Ni-Cu-Ni) with an appealing silver surface that doesn't rust or scratch