Collect a small ear notch for the IDEXX SNAP BVDV Antigen Test with the v-shaped ear notcher. The V-shaped notcher is made from 100% stainless steel and designed for moderate removal of the ear. A small ear notch of > 2-3mm in diameter is required for the SNAP BVDV test, so position the ear notching tool to accommodate an adequate amount. It is easy to use and comfortable to handle so you can complete the notching process in a way that is as stress-free as possible for you and the animal. Measures 6.2."