1/8 x 3/4 blind rivet is a cylindrical, metal or aluminum fastener designed for joining materials where there is no access to the back side, with a 1/8-inch (3.2mm) body diameter and a 3/4-inch (19mm) length, used with a special hand tool that pulls a mandrel to create a tight, permanent connection. These rivets are ideal for sheet metal and other applications where a strong, reliable, and permanent joint is required, resisting corrosion and loosening over time.