New Out of Print Pilot Hitech C LHRF-20C3 Refill Blue 3 Piece Set
£49.48
This is a very valuable D1 (4C) standard needle ballpoint pen refill. The D1 standard is compatible with a variety of ballpoint pens, including LAMY2000, Shabo X, and 4 fine point colors. That's how much demand there is.
