These are perfect basing magnets for Star Wars Legion miniatures.
There are several different sizes, use them for There are multiple sizes that are best used for different models.
Small: Droid infantry that are quite fraggile.
Medium Thick: Storm Troopers, Clone Troopers, Rebel Troopers
Large Thick: Snowspeeder, ATST, ATRT, BARC Landspeeder, Truck, AAT, Saber
Rare Earth magnets are the strongest magnets in the world. These magnets have pull several times their weight.