DayMark Date Coder Replacement Ink Roller, Black Ink, for SpeedyMark Express Marking Guns (Pack of 5) Black ink replacement roller for date coder Ink rollers are quickly and easily replaced in the coder Fresh ink roller keeps the imprint dark and easy to see Designed for use with Daymark DM3 and DM4 Red plastic 1-line and 2-line Marking Gun Labelers Fast and cost efficient for dating inventory