Size: 20mm in diameter, hole: 3mm, perfectly fit with about 2~2.5mm thick crystal thread, tiger tail, memory wire, nylon trim cord, waxed cord and polyester thread. You can string these beads up with the help of big eye needles. Package Includes: about 25pcs totally. Charming beads with sparking surface that add excellent light reflection and additional flash to jewelry designs. Material: Made of acrylic in random mixed colors, the vibrant colors beads can meet various needs, the colorful designs within beads make them a popular choice for festival and whimsical jewelry. Great Fillers: Perfect for crafting, pearl beads also make an elegant vase and candle base filler such as weddings, bridal showers, anniversaries, business socials! Add to centerpieces or create strings of garland for a holiday tree. Wide Usage: Use these round beads in between all your favorite beads or string a whole strand of them, these beads will add a little extra shine to your jewelry making projects. Great for shamballa bracelet, earring, bracelet, necklace, anklet, and other DIY projects making, dress, clothes, shoes decorations.