This is a set of 100pcs numbered one to hundred.For pig/sheep/goat/cow management on your farm.Helps to identify your animal in case of theft or escape. Helps in identifying which animals have been administered which drug.Tracing a pig's age is important when selecting replacement breeding stock from within the herd.Not only will you be able to quickly verify which animal you are working with, it helps you locate their record in your record books. Easy to apply. Note: applicator plier sold seperately.(buy once,and use for life).Other colours are available