circular name badge magnet made of powerful neodymium magnet, with 3M type not easy to fall off. name badge holder perfect for office, school, conferences, arts and crafts, hanging signs and posters, and attaching other accessories to clothing. magnet attaches to the shirts, jackets and even winter coats with strong Neodymium Magnet. This prevents traditional brooches from damaging your clothing. All you need to place the circular back plate and the stainless steel plate on each side of the garment and they will automatically snap together. Item size: 1.6*1.6*0.5cm 0.63*0.63*0.12 Inches.