25 STEEL (8-10LF) POP Rivet Large Flange 1/4" Barrel Dia x 5/8" Max Grip Steel (Zinc Plated) Large Flange Rivet 1/4" Barrel Diameter / 5/8" Max GRIP Actual Barrel Length 0.85: / Flange Width 0.75" Must Have A Riveter That Is Capable of Pulling 1/4" Dia Steel Rivets Package Contains 25 Rivets