113mm (4.42”) x 6mm (0.24”), 0.5 Tip, Compatible Rollerball Pen Refills Compatible with Mont Blanc PN: 105159/107878/MNB107878 M710 H-12 M401/M506 P163, German Ink (Red 2PCS). CaoDuRen 113mm (4.42”) x 6mm (0.24”), 0.5 Tip, Compatible Rollerball Pen Refills Compatible with Mont Blanc PN: 105159/107878/MNB107878 M710 H-12 M401/M506 P163, German Ink (Red 2PCS).
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