Use a V-ear notcher to notch piglets weighing less than about 25 lb. These notchers typically make a notch that is 3/16 to 1/4 in
deep. For larger pigs, a notcher that makes notches 1/2 in deep is recommended. Ear notching helps identify a pig's litter and
which one of the litter it is, giving each pig a unique identity number. Notches are placed in one of five locations in the pig's
right ear to show the litter number and in one of three locations in the left ear to show the individual pig number. Reading the
notches allows producers, judges, and other swine professionals to know more about the pig they're viewing. Locking clip and blade
spring. For larger pigs.