Rust-Oleum 247596 Magnetic Primer, Smooth, Liquid, 1 qt, Can

specialty magnetic primer is a dark gray basecoat designed to transform a simple surface to one that attracts magnets. Magnetic primer can be applied to wood, metal, masonry, drywall, plaster and can be top-coated with any latex paint. Strong magnets with minimal weight adhere best when coated properly. It is safe to use near electronics.