YMCKO ribbon (Yellow, Magenta, Cyan, Black panels, and Overlay panel) Cleaning roller included Print capacity 250 cards Compatible with SMART-21, SMART-31, SMART-51 Part Name: SS-IDDC-P-YMCKO | Part Number: 659366 The SMART YMCKO ribbon kit (659366) is compatible with SMART-21, SMART-31, and SMART-51 ID card printers. This ribbon is ideal for personalizing plastic ID cards. With its five panels, the YMCKO ribbon kit has a print capacity of up to 250 copies per roll. The YMC panels provide vibrant color printing while the K (black) panel prints crisp text and barcodes. The fifth panel is an overlay panel to protect the print on your ID card. .