Durable Material:Size：89 x 50mm/3.47 x 1.95inch(L x W); Thickness: 0.5mm; Magnetic strength：300GS and Pack of 200pcsMade of rubber with adhesive back and Magnet, Can label any metal item, is easy to use, records what you want, and when you don't need it, it can be peeled off without leaving any traces.Multipurpose:Quality materials, weather proof, sun proof, you can easily apply them to cars, walls, mailboxes, refrigerators, or any metal surface.Simple To Use:Flexible and durable. The magnet sheet is easy to cut, you can cut any shape as you like. just tear off the adhesive and stick the card you need. It is good for DIY projects, arts, crafts. can be used as refrigerator magnets, car magnets, etc.