Brand New. Uni-ball SigNo Gel RT Rollerball Pen Retractable Fine 0.7mm Tip 0.5mm Line Blue Ref 9004551 [Pack 12] Colour-coded pocket clip and comfort grip. Unique twin ball system prevents reverse ink flow. Automatic retracting action pocket clip. 0.7 tip gives a line width of 0.5mm. OND571003