Keep signage visible in dark with this 2in glow-in-the-dark continuous label roll. Designed to last for hours after just under 30 minutes of light exposure, these labels remain readable for 6+ hours even in severe power outages to help keep workers safe.2.8mm thick, 5in outside diameter, 1in core, 75ft per roll. For use with TD-4750TNWBCS and BMSLPR03 Black Resin Ribbon.