Pandahall 20Sets Chunk Snap Button Base Making Brass Snap Buttons Snap Popper Stud with Clear Glass Cabochons Platinum Clear Button: 18x4mm Tray: 16mm Quantity: 20 Sets in one package(20pieces Snaps Back and 20pieces Cabochonss) Size: snap buttons: about 18mm in diameter, 4mm thick; knob: 6mm; tray: 16mm; glass cabochons: 16mm in diameter, 5.3mm thick. Please note: not come with the snap back fastener sets. Good choice for all jewelry , diy craft sewing, scrap-booking, gift making applications. Great to make Jewelries and crafts with this snap cap for bridal shower, birthday, Christmas and friendship. <span class="a-text-bold">Quantity:</span> 20 Sets in one package(20pieces Snaps Back and 20pieces Cabochonss) <span class="a-text-bold">Size:</span> snap buttons: about 18mm in diameter, 4mm thick; knob: 6mm; tray: 16mm; glass cabochons: 16mm in diameter, 5.3mm thick. <span class="a-text-bold">Please note:</span> not come with the snap back fastener sets. <span class="a-text-bold">Good</span> choice for all jewelry , diy craft sewing, scrap-booking, gift making applications. <span class="a-text-bold">Great</span> to make Jewelries and crafts with this snap cap for bridal shower, birthday, Christmas and friendship. <span class="a-text-bold">Size:</span> snap buttons: about 18mm in diameter, 4mm thick; knob: 6mm; tray: 16mm; glass cabochons: 16mm in diameter, 5.3mm thick.