Running low on your disappearing ink? Fear not! This nifty replacement cartridge for Double Cross will have you writing like it’s brand new (which, let's be honest, is about time). If your ink's looking more like a sad ink blot than a vibrant pen, this refill is just the ticket. Just a heads up—you’ll need to have the original prop already, as this is strictly the vanishing ink. For how to install it without turning it into a magic trick gone wrong, check out the end of the Double Cross instruction video.
