Zebra Oil-Based Ballpoint Pen Refill, Surari EQ-0.7mm Core, Black, 10-Pack, B-REQ7-BK

[Compatible Pens] Surari 300 (0.7), Surari (0.7), Filler Twist-Knock Type (0. 7) [Surari] Dark and smooth emulsion ink [Emulsion Ink Features] Combines the "firm feel" of oil-based ink with the "light writing feel" of gel (water-based) ink / Emulsion dye + pigment [Refill Size] Maximum barrel diameter 4.4 x total length 110 mm / Weight 1.3 g [Quantity] 10 refills