Vintage Airstream shells were made with 1/8" brazier head rivets. This 3" straight rivet set is the correct shape and size for vintage Airstream rivets. It is used with both 1/8" brazier head rivets (AN4554) and our 5/32" modified brazier head rivets (AN4565). Don't make the mistake of buying a regular set designed for universal head AN470 rivets. The shape is different and you will damage the head of the brazier head rivets while bucking. This set has a .401" shank.