Real paint for long-lasting identification. Marks skins, hides and pelts. High visibility, fade-resistant and weather-resistant. Perfect for heat detection, breeding, health management, sorting and more. Convenient, plastic twist-up style tube. Each Stik measures 4-3 4 x 1-1 4. For use on marking hogs and pigs for inoculations, sorting, breeding and marking cattle for sorting, breeding, healthcare, and marking sheep for sorting.