Review on MIKEDE Strong Neodymium Disc Magnets, 16 Pack Powerful Permanent Rare Earth Magnets With Double-Sided Adhesive, Fridge, DIY, Building, Scientific, Craft, And Office Magnets, 1.26 Inch D X 1/8 Inch H by Alan Sawyer

to begin with i ordered these to put up signs to keep others from dumping trash into our dumpsters. they take and swap out those dumpsters every other week. i needed magnets for the signs so that i could remove then and then put them back up once that is done.these magnets looked like they would do the job. on arrival the first thing i noticed was that the top couple of magnetics were smashed into tiny pieces? so there is no solid metal these are a composite material. they are similar in size to quarters both in diameter and depth. stacked they actually look like a stack of quarters not magnets.but as said some were smashed up. this is where i found how powerful they are. trying to get the broken bits off the rest of the magnets was not an easy task by any means. fyi due to how breakable they are REMEMBER the 6" rule. if you get two of these within 6" of each other they'll literally jump out of your hands to 'grab' each other. no wonder they put small plastic dividers between them so you can pull them apart.therein lies another problem. they do not come with adhesive already applied to the backs. instead they send some generic looking round glue tabs. even after letting these sit for awhile before putting up the magnets are far too strong for the adhesive to hold up when the item is removed. at most i was able to lift the sign off once before the magnets ripped off the glue tabs. simply not a good design for magnets intended to be removed with whatever they are attached to.the magnets that did make it unbroken cannot be used for their intended purpose all due to the glue/sticky tabs not holding up. so between the fragile nature of these and the lack of adhesion with the glue/sticky portion i can't recommend these. they are amazingly strong magnets but with two too many flaws for me. they might well work out for others which is why i gave them a three star rating and not two.FYI amazon customer service as usual was great. i let them know about the broken magnets and the issue was resolved in under five minutes. i appreciate that very much!