These high energy ceramic magnets come in four different sizes to accommodate your projects. The ceramic magnets work great for a lot of different purposes. For example, these ceramic magnets would work great for keeping your cabinet doors closed in your kitchen or they would also work great if you are wanting to make yourself a magnetic knife holder. They even work great as picture holders on your refrigerator. Whatever your project may be these magnets are a must have! Please select what size magnets you would like.