Available in sizes large diameter post (#9) and medium diameter post (#12). #9 base diameter is 1/2" (13 mm). #12 base diameter is 3/8" (10 mm).

#9 has a thick post. Use Copper/Brass Rivet Setter #8110-00.
#12 has a medium post. Use Copper/Brass Rivet Setter #8110-01.