Czech seed beads are some of the highest quality, most uniformly sized beads in use today. These 10/0 Czech glass seed beads are an ideal bead for weaving, stringing and sewing onto fabric. Slightly bigger than an 11/0 therefore a little easier to use. Use with nymo thread sizes D, B and size 12 English beading needles for weaving and loom work. Pack Description: 500gms Bulk Bag by Preciosa (Jablonex) The Czech Republic has been manufacturing glass beads since 16th century, Preciosa is building upon 470 year-old glassmaking traditions at the heart of a region affectionately named crystal Valley. Expertly-handmade by skilled artisans through pressing molten glass into a mold and guaranteeing high craftsmanship with every bead. Polished with vibrant and pleasing color palettes, every bead will inspire a new stringing project, bead-weaving design, jewelry and accessory making and more.