Alloy Buttons, 4-Holes, Flat Round, Lead Free, Antique Silver. Size: about 23mm in diameter, 3.5mm thick, hole: 2mm. Use as buttons, embellishments, button closures and more. These tibetan style buttons add an inviting touch to just about anything. So buy this and Get 48% OFF 20 pcs Flat Round 4-Holes Alloy Buttons for $1.82 @PandaHall