SINGLE & DOUBLE CAP RIVETS LEATHER CRAFT STUD REPAIR RAPID 9X8 9X10 9X12 9X15MM
The sizes are 8x8, 9X8, 9x10, 9x12, 9x15. Doulble and Single Cap Rivets. As a general rule, When selecting Rivet sizes, it is advised that the Stem Length be 2-3mm longer than the combined thickness of the pieces of material you wish to join.