This is an iColor 600 Fluorescent Magenta drum cartridge replacement part. Requires matching fluorescent magenta toner cartridge (ICT600FM). The IColor Fluorescent Upgrade Kit is just one of the many specialty cartridge sets that can be used with the IColor 600 Digital Color + White Transfer Media Printer. Instantly transform your IColor printer into a fluorescent printer where the printed images produced will glow brightly under UV light. Simply remove and store the standard CMY toner/drum cartridges and swap with the fluorescent kit to instantly print with UV sensitive toner while using the standard black cartridge in place. The white cartridge that shipped with your printer can also be used if a white overprint is required.