There is a wide variation in how hanks get tied up.   In general, there would be 12 loops of beads on each hank, each loop about 20" long, with a total of about 4,000 size 11/0 seed beads.   Typically a hank would weigh between 35 and 40 grams.   But again, there is a wide variation.   11/0 beads are approximately 2mm in diameter. There will be noticeable variations in bead size and hole size among the beads in a hank.