Jablonex Czech Seed Beads Mix Size 10/0, Rainbow Opaque Multi 1 Hank Per 3900 Beads High quality Czech 10/0 glass seed beads. 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. Jablonex Brand Glass from the Czech Republic Approximate pack specifications: 1.4 ounces: hank or hank equivalent of 12x20" strands, 3900 beads.