Czech 10/0 glass seed beads. Preciosa brand. 10/0 Czech seed beads are a great size for a wide range of beadwork techniques. Sold in a vial of 22 grams (Approx. 2,000-2,100 pieces). Use with Nymo thread sizes A, B and D and size 12 English beading needles for traditional beadwork. Free shipping available.