CARCO Ink Marking System: 1/4 in Dot DiaCARCO Ink Marking System: 1 4 in Dot Dia Item 40LF49 Mfr. Model ES 712 F44 R27 24V Covered spring contact marking systems create neat, repeatable dots on parts in production. When activated, their marking tips extend toward an item and contact it, marking it. These marking tips are covered when not in use, allowing for fast drying inks and faster production lines. Brand CARCO Manufacturer Part Number ES 712 F44 R27 24V Marking Method Covered Spring