Amazon Prime Pentel EnerGel Deluxe RTX Gel Pen, 0.7mm, Black Ink $2.99 ExpUnk
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https://www.amazon.com/Pentel-EnerGel-Deluxe-Retractable-BLN77BP2A/dp/B001IZF3MG/ref=sr_1_6?dchild=1&keywords=Pentel+EnerGel+Deluxe+RTX+Retractable+Liquid+Gel+Pen%2C+0.7mm%2C+Metal+Tip%2C+Black+Ink%2C+2+Pack+(BL77BP2A)&qid=1609344499&sr=8-6
Has great revised ink, usually $6.99. Doesn’t pay to buy refills for the pen, because the refills will cost you more than the pen!
