Official NAIS 840 Series visual ear tags. Sold in Matched Pair Sets - one for each ear. Meets requirements for registration with the Brown Swiss Association. Available in white or yellow. Available with management number of your choice or blank. Tamper-evident construction. Apply with Destron Fearing Pro-Grip Universal Applicator (sold separately). Packaged in sets of 25 buttons per package. USDA, CCIA, and ICAR approved.