Hrph Pig Mark Forceps Ear Tag Clamp Ear Installer Alloy Cattle Sheep Veterinary Equipment Automatic lock, Easy to use, Saving time and effort Ergonomic palm design, non-slip grip, marking more smoothly! It is convenient to replace the ear tag pin with a small wrench High-quality aluminum alloy, high-grade paint shell never rust, durable This ear tag can be used in sign small size livestocks or animals, such as pig, sheep, goat, deer, dog, and so on.