These inexpensive disc magnets are great for many craft uses. These magnets are not nearly as strong as our ceramic disc magnets but are great for light duty jobs. These magnets have adhesive already on them so they are ready to use! They are also receptive to most adhesives including hot glue, E6000, Goop, Bond 527, Liquid Nails, 2 part epoxies and more. Great for making refrigerator magnets, small signs and more! As with all of our products these magnets are brand new and factory fresh. Size is about 1/2" diameter x a very slim 1/32" thick.