10SETS Flat Belt Screw Leather Craft Chicago Nail Brass Solid Rivet Stud Heads
4mm：Female rivet 5 x 4mm +Male rivet 4 x 3mm. 6mm：Female rivet 5 x 6mm +Male rivet 4 x 4mm. 8mm：Female rivet 5 x 8mm +Male rivet 4 x 4mm. 10mm：Female rivet 5 x 10mm +Male rivet 4 x 4mm. Female rivet Size : 5 x 4mm, 5 x 6mm, 5 x 8mm, 5 x 10mm.