Photo 1 of CaoDuRen Ballpoint Ink Refill Compatible with Montblanc Ballpoint Ballpen Rollerball Pens Tip: 1.0mm Medium Point, Soft Smooth Roll, 3.88 in / 98 mm Long 116190 124493 P164 (Black + Spring, 2PCS)

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Photo 1 of CaoDuRen Ballpoint Ink Refill Compatible with Montblanc Ballpoint Ballpen Rollerball Pens Tip: 1.0mm Medium Point, Soft Smooth Roll, 3.88 in / 98 mm Long 116190 124493 P164 (Black + Spring, 2PCS)Photo 2 of CaoDuRen Ballpoint Ink Refill Compatible with Montblanc Ballpoint Ballpen Rollerball Pens Tip: 1.0mm Medium Point, Soft Smooth Roll, 3.88 in / 98 mm Long 116190 124493 P164 (Black + Spring, 2PCS)