2-Hole Resin Buttons, Flat Round, Mixed ColorSize: about 0.51 inch(13mm) in diameter, 0.10 inch(2.5mm) thick, hole: 0.06 inch(1.6mm).â Material: These buttons are made of resin material, durable & strong, with bright and smooth surface. â 2-hole Design: The button with 2 holes are suitable for light-weight or middle-weight fabrics. â Versatile: Fit for various sewing, knitting, crocheting projects such as shirts, hats, scarves, jackets, bags, pants, shorts, skirts; also fit for card making, scrapbooking, collection or other DIY craft.