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Ohto G-307 Gel Ink Pen Refill - 0.7 mm - Black

by Ohto
  5.0  1 reviews | Write a Review

Ohto G-307 Gel Ink Pen Refill - 0.7 mm - Black - OHTO G-307NPP BLACK
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Gel ink refills from Ohto that can fit all the Ohto Liberty pens such as the Ohto Fine, Orca and more. These refills are the same size as the C-30X (i.e. C-305, C-307, C-310 etc) Ceramic Roller Ball series and are interchangeable. The G-30X series has gel based ink instead of the water based ink of the C-30X line. 0.5 mm, 0.7 mm and 1.0 mm sizes available.

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Model NumberOHTO G-307NPP BLACK
Weight0.3 ounces
Diameter - Max 6 mm
Ink Color Black
Quantity in Pack 1
Size - Length 11.5 cm
Tip Size 0.7 mm
Tip Type Conical


October 2, 2010
This is currently my...
Verified Purchase
This is currently my absolute favorite ink replacement cartridge. It's silky smooth and doesn't ever skip. The Pentel KLR7 and LR7-A cartridges are solid as is the Pilot BLS-G2 and Zebra JF 0.7. I've even gone to some of the higher-end Waterman, Lamy (M66, M63), and Mont Blanc rollerball cartridges and none are as good as this cartridge. I've tried well over 100 different ink cartridges over the past year and THIS is the one that I use every single day. Highest possible rating.