Z Tags 1-Piece Pre-Numbered Laser Print Tags for Calves, Numbers from 126 to 150, Blue Tag design ensures that the back of the tag will not snag and pull out or break off Exclusive self-piercing tag tip makes a clean, precise incision to prevent infection and promote faster healing Flexible tag material resists snagging on wire or brush Laser Print is guaranteed for the life of the animal Laser Print is etched deep into the tag