Full Size Ink-Vue Diaphragms for Waterman Ink-Vue Patrician fountain pens.

Debutante Diaphragms for Parker 51 and Debutante Vacumatic fountain pens.

Pen Sac - Size 22 Straight. 22/64 inch diameter latex pen sac, a popular larger size used in Eversharp, Waterman, Conklin and other fountain pens.

Pen Sac - Size 20 Straight. 20/64 inch diameter latex pen sac, a popular larger size used in Sheaffer, Waterman, Parker, Eversharp, Conklin and other fountain pens.

Pen Sac - Size 18 Straight. 18/64 inch diameter latex pen sac, a popular larger size used in Sheaffer, Waterman, Conklin and many other fountain pens.