Magicard MC250YMCKOK Color Ribbon for the Magicard 300 ID Card Printer, 250 PrintsThe MC250YMCKOK is the dual sided color ribbon Magicard made for the Magicard 300 ID card printer with dual sided printing enabled (Magicard part no. MC250YMCKOK 2). Each roll prints 250 ID cards with full color on the front and sharp black on the back. YMCKOK stands for the panels on this ribbon: Yellow, Magenta, Cyan, Black, and Overlay for the front of the card, plus a second K panel that prints resin black on the back. If your Magicard 300 only