5730-3000 - Badge Backs Pressure Sensitive 50 Per Pack This MagnaBadge magnetic badge attachment is clothing friendly as it doesn't cause tears or pin holes. The magnetic badge attachment has the strongest holding power of all magnetic badge attachments. The badge attachment has two, round, rare earth magnets. The magnets are encased in plastic on a nickel-plated steel plate and come with one zinc-plated steel plate. The zinc-plated steel plate of the magnetic badge attachment includes a pressure-sensitive foam pad with peel-away liner, which is attached to the back of your card. The other half of the two magnet, magnetic badge attachment is placed underneath your clothing for a secure hold. Mounting plate dimensions: 1 3/4" x 1/2" (45 x 13 mm) Weight: 0.5 oz