Rivet Set SM10-4556-4568 For setting 3/16" Brazier Head Rivets with .401 shank and is 1/2" body diam.
Rivet Set SM10-4558-45610 For 1/4" Full Brazier Head Rivets with .401 shank
Rivet Set SM50-4558-45610 For 1/4" Full Brazier Head Rivets And is Bell style with .401 shank