20SETS MULTI Colors Fashion pearl snaps fasteners for western shirt clothes popper studs (Black) Product : Pearl snaps fasteners button (more shiny BEST quality) Upper part - Top Pearl Prong Size 16, 10.5 mm = 7/16" approx Underparts - Socket, Duo Stud & Prong Ring Size 14, 9.0 mm = 3/8" approx Quantity : 20 sets Material : Glass crystal (HQ) Best quality shiny, durable & easy installation with our tool.