Bead Size	Approximate Diameter
1/0	6.5mm	The Czech seed beads we offer at this time are in sizes 11/0, 6/0 and 1/0. 11/0 seed beads are quite small. The beads are about 2.3mm in diameter and there are about 16-17 beads per inch (7 beads per cm). 11/0 beads are sold by the "hank". A hank is a small bundle of 11 to 12 strands of seed beads; each strand is about 19 inches long, for a total of about 19 feet (228 inches) of stringing distance. One hank is the equivalent of about 37 grams, for comparison to seed beads sold loose in vials or tubes. 6/0 beads are larger - 4.0-4.2mm diameter. They come about 9 beads to the inch (4 beads per cm). They have holes that are large enough to fit easily on Memory Wire or 1mm cord. They are also called 'E Beads'. 1/0 are the largest seed beads made - they are about 6.5mm diameter; they come about 5 beads per inch (2 per cm).
4/0	5mm
6/0	4mm
8/0	3.1mm
10/0	2.3mm
11/0	2.1mm
12/0	1.9mm
13/0	1.7mm
14/0	1.6mm
15/0	1.5mm