Multi-grip rivets are a type of blind rivet that can be used to join materials of different thicknesses. They have a unique design that allows the rivet to expand to a larger diameter, which creates a secure connection even when the materials are not the same thickness. Multi-grip rivets are available in a variety of sizes and materials, so you can choose the right rivet for your specific application. They are typically used in applications where a secure and positive connection is required, but where the materials may be of different thicknesses, such as in automotive, aerospace, and marine applications.