THIS IS A VINTAGE AUTHENTIC ITEMS NOS NEVER USED RIVETS. YOU GET ALL 20 RIVETS JUST LIKE THE PHOTO SHOW. IT'S A SPECIAL TYPE NOT FOUND IN HARDWARE STORES ANYMORE. I GOT THEM FROM A CLOSED OLD BIKE SHOP NO LONGER IN BUSINESS. THEY FIT SCHWINN STINGRAY / KRATE FENDERS AND BALLOON TIRE BIKES, MIDDLE WEIGHT AND MANY OTHERS.