The Rooster Farms Blue 1-100 Cattle Number Ear Tags Set is perfect for signing small or larger size livestock, cattle and animals, such as pigs, sheep, goats, cows, rabbits, dogs and so on. Easily and conveniently identify individual livestock in an instant using a numbered system. It can also be applied in breeding populations for epidemic prevention and control, meat quarantine, and all information needed for the management of livestock.