Hank (unit of measure)

In the textile industry, a hank is a coiled or wrapped unit of yarn or twine, as opposed to other materials like thread or rope, as well as other forms such as ball, cone, bobbin (cylinder-like structure) spool, etc.

[1] In yarns for handcrafts such as knitting or crochet, hanks are not a fixed length but are sold in units by weight, most commonly 50 grams (2 oz).

Special treatments to the materials that add cost, such as mercerisation or labor-intensive hand-painting of colors, can influence a manufacturer's desired length per unit as well.

Knitters and crocheters rewind the hanks into balls or centre-pull skeins prior to use, in order to prevent the yarn from becoming tangled.

[2] In the meat industry, a sheep, lamb or hog sausage casing is sold by the hank.

Hanks, twisted and untwisted. The tie typically used to hold the coil together is visible on the left.
The three uppermost yarns are in hanks.