Phoenix Contact 0817235 A cable marker roll can be customized with various labeling options including THERMOMARK products such as E.300 (D)/600 (D), ROLL 2.0, and more, available for rolls with a diameter range of approximately 3 to 4.2 mm. The markers are mounted using a slide-on system, accommodating up to 4000 individual labels per roll, featuring text fields measuring 6mm in height and 15mm in width.