Sets provide storage for technical pens in a convenient hinged-lid case with push button release. 7-pen set includes one each of 3x0, 00, 0, 1, 2, 3, and 4 pens, a bottle of Koh-I-Noor(R) waterproof, black India drawing ink, and two nib keys. 4-pen set includes one each of 00, 0, 1, 2 pens, and universal ink.
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