Amazon
The V-SIGN PEN from Pilot lays down a smooth, vibrant line of pure liquid ink The V-SIGN PEN features many of Pilot's ingenious features, including the ink viewer window and the ink control system, guaranteeing you a consistent ink flow right to the last drop 2.0mm tip gives a 0.6mm line
Amazon MarketplacePilot – sw-vsp-lb Liquid ink for perfect detailView of the ink level via a zone transparentePolyester Heavy Duty in tipWidth of 0.6 mm Writing WidthCap clipColour: Turquoise