Seed Beads 6/0 Czech Opaque Rainbow (a full 38 gram pack) over 400 colors available individually!, Dark Red High quality Czech 6/0 glass seed beads. 6/0 beads are also known as E beads. Our huge range of colors and finishes in 6/0 beads makes them ideal for beadwork and jewelry-making Czech 6/0 glass seed beads make wonderful spacers between larger beads or can be used on their own. Use with nymo thread sizes D and F and size 10 English beading needles for traditional beadwork . Approximate pack specifications: Full 1.4oz pk, 2oz ship weight, 500+ beads 3.3mm, 60 inches strung