This rivet pack is EIGHT pairs of rivets (or 16 halves). Enough for a cage or any box that uses two per corner. Plastic rivets give a professional, finished look to your cage. They are secure and easy to snap in. No tape or glue guns needed to hold your corners or pieces together.
Just take a flat-head screwdriver and wiggle it between the two pieces of coro. Gently turn the screw driver and the rivets will pop out. You should be able to reuse them multiple times.