Blind Rivet System of Measurement Inch Body Length 1 1/8 in Shank Diameter 0.25 in Product Type Blind Rivet Body Material Nylon Head Type Dome Head Diameter 1/2 in Maximum Hole Diameter 0.25 in Minimum Material Thickness 5/16 in Maximum Material Thickness 13/32 in Material Grade/Class Ungraded Mandrel Material Nylon Color Black Package Quantity 25