Master Magnetics 8-Piece Ceramic Block Magnets are ideal for crafters, hobbyists, and teachers. These ferrite magnets can be attached to frames, calendars, schedules, and more to display on ferrous metal surfaces. They are rectangular in shape and easily fit onto smaller items. Use them to make your own custom magnets. 0.1875" Thick x 0.25"W x 0.875"L