Round Magnets with Adhesive Backing, 180 Pieces 3M Magnetic Dots (Diameter 0.8’’ x 0.08”) Anisotropy Flexible Sticky Circle Magnets Tape for Whiteboard, Refrigerator, Crafts, ClassroomANISOTROPY MAGNETS: Each magnet dot can hold 50g objects when the magnet is attached to a vertical wall 3M ADHESIVE BACKING: The magnets have a 3M adhesive backing, ensuring that they stick firmly to most smooth surface without falling off. After the magnetic tape stick on wall, pls kindly wait 24 HOURS for the 3M firmly, then hang your objects. 3M bond strength will achieve 90% after 24 hours, and will achieve 100% after 72 hours VERSATILE