Post announcements, bills or visual aids on whiteboards with these round magnets. Their high-strength build provides sturdy placement of thick paper and card stock onto magnetic surfaces. Also suitable for marking, plotting line graphs and making DIY fridge decor. High-power magnets hold documents and signage to magnetic boards and signs. Each disc shaped magnet is 3/8" in size for discreet use. For use with boards and signs. Silver. Character Types: Magnetic Pins/Tacks; Character Style: Circles; Character Mounting Type: AlNiCo Magnets; Number of Pieces: 50.