Toho 8/0 round Japanese seed beads have a very consistent shape and size. They are designed to have a larger hole than other seed beads that allows for even more pass-throughs for thread. The larger hole also creates lighter beads which give you more beads by weight.DetailsColor: Transparent CrystalMaterial: GlassSize 8/0 measures 3mm in diameter with about 13 beads per inchApproximately 40 beads per gramQuantity: 17 grams packaged in 4 inch tube (about 680 beads)