Product Characteristics: Large flange provides a more robust riveting force, a greater supporting surface, and offers unique protection for delicate materials. Widely used in assembly of caravans, trailers, furniture, plastic-framed window body. The rivet assembly is inserted into a hole drilled through the parts to be joined and a specially designed tool is used to draw the mandrel into the rivet. This expands the blind end of the rivet and then the mandrel snaps off. Material: Durable heat resistant Aluminum Alloy, Iron material. Not easily damaged, No rust, anti-oxidation. ensuring durability and long-lasting performance. Specification: Product Name: Dome Head Large Flange Blind Rivets, Material: Aluminum Alloy, Iron, Color: Black, Grip Diameter: 4.8mm / 0.19", Grip Length: 8mm / 0.31", Flange Diameter: 9.5mm / 0.37". Easy / Professional Installation: Installation Steps for Blind rivets 1. Blind rivets are fasteners used to connect two materials together without the need for access to both sides. 2. The installation process involves placing the rivet into a pre-drilled hole, 3. Then using a rivet gun to pull the mandrel, expanding the rivet and securing the materials in place. Package List: 50(+/-2%) Pcs Dome Head Large Flange Blind Rivets. Note: Please check size specifications and grip range before purchasing in order to avoid buying wrong size.