6 Size Half-round Pearls: about 4mm, 5mm,6mm, 8mm, 10mm, 12mm in diameter, 2~6mm thick,about 690pcs/box. Black color flatback pearls are suitable for Halloween makeup and cloth decoration.Quantity: 4mm: about 340pcs; 5mm: about 170pcs; 6mm: about 100pcs; 8mm: about 45pcs; 10mm: about 25pcs; 12mm: about 10pcs.Material: Acrylic; Smooth surface with black color, half round pearl's surface is glossy without scratches, oxidation-proof and dust-proof.Half Pearl Design: you can glue the flat back to stick to anything you like. The small one can also be used to nail art, make with your glue.Wide Usage: Perfect to decorate your hats, bags, shoes, hairpins, headbands, Christmas cards, mobile phone shell, photo frame, also ideal for DIY your handmade crafts, scrapbooking, makeup, nail decorations, wedding arrangements, clothes decorative, quilling projects, card-making projects and more.