The Zebra 800015-101 K black monochrome ribbon delivers crisp sharp text and clear monochromeimages and barcodes. Black on the frontor front and back black. The Zebra800015-101 ribbon is for use with the following Zebra ID card printersP300,P300F,P310F, P310i, P310C, P320i, P330i, P330m, P400, P420C, P420i, P430i,P500, P520C, P520i, P600, & P720C.