Features: * Made of neodymium which is the most powerful magnet material in the world * Super magnets are great for projects that require extreme strength in a small size * Due to the extreme strength, these magnets are not for children as they can pinch fingers * At the size of a dime, these magnets are strong enough to hold a 1/4-inch thick pad of 3-inch x 3-inch pad of sticky notes to a filing cabinet * 0.118-inch thickness * 0.709-inch diameter What"s In The Box: * Master Magnetics 07047 Neodymium Disc Magnets - 3-Pack