Cut from large sheets down to this useful size, they are cut in a certain way which shifts the magnetic polarity in the sheets, making them match up and stick together evenly. These can also be used individually to make fridge magnets and you can also cut them down yourself very easily with scissors.
Circle Tape
2 Self Adhesive Magnetic Sheets A4 0.85mm, for Spellbinder Dies Storage or Signs
Sizes: 2 rolls of 16ft x 1/2 flexible magnet tape, extra thick (1.5mm) anisotropic magnetic roll. 2 rolls are equivalent to 3 rolls in length Strong
Magnetic Tape 2 Rolls 32ft Magnets with Strong Adhesive Backing Anisotropic Flexible Magnetic Strip(1rolls 16 feet x 1/2 Wide x 1/16 Thick)
Bulk Adhesive Magnets - 18 results
1/2/5/10/15PCS 30x5mm Disc Rare Earth Neodymium Magnet 30x5 Bulk Round Search Magnet With 3M Double-Sided Adhesive Tape 30*5 mm - AliExpress
Magnetic Calendar + Dry Wipe Pens, Fridge Calendar or Monthly Planner Whiteboard
Sticky Weekly Planner, Dry Wipe Wall Planner Self Adhesive Daily Dry Erase
Magnetic Weekly Planner, Small Whiteboard Dry Erase Fridge Meal
3M Double Coated Tissue Tape 9456, Clear, 3/4 in x 72 yd, 4 mil, 48 Rolls per Case
Magnetic Hooks Extra Strong, Heavy Duty Ceiling Hanger or Hanging Fridge Magnet