2 Line Gun - DayMark Label Gun and Labels simplify proper product rotation and assist in ensuring food safety. Available in four adhesives and a variety of styles, DM4 Label Gun Labels are designed for a broad spectrum of restaurant applications. DM4 Label Gun Labels are designed to fit the 2 Line Marker DM4 Speedy Mark Express 20. When loaded into the 2 Line Marker, DM4 labels can be printed with two lines of information and quickly adhered to a product or package.