Single Slot Holds Three 1" Replaceable Numbers and Letters. Numbering Disc features the Dial-The-Number indicator showing the number being branded. 1 inch characters from 0-9 around outside of head, Self contained heating unit keeps all digits hot. Includes built-in stand, Slot in face of branding head for up to 4 more characters - numbers or letters. Rugged construction for long life. Available in 120 or 240 volt.