Originally the definition of size 11/0 meant that there are 11 beads to the inch, but with delica's it tends to be more like 17 to 22 beads per inch, depending on the finish.
In general, there are 7 to 8 grams in each 3" tube of size 11/0 hex or cut and there are around 230 beads in a gram so a tube holds 1610+ beads per tube. The except to this rule is the precious metals coated delicas which are packaged with 6 grams to a tube.
If you order 4 tubes you will receive your beads in a rectangular tube with a flip top.
Points to Consider About Delicas: