Sakura SAK44108 SakuraIDentiPenDualPointYellow IDenti-Pen Dual Point Bulk Yellow Sakura Identic-Pen Dual Point Pen Sakura Identic-Penis a dual point permanent ink marking pen that gives you a choice of a fine or extra fine nib, with a plastic tip on either end. Excellent for use on metal, glass, ceramics, rubber, wood, photographs: virtually any surface.