Amazon.com : 5 Genuine Intrepid Fine Ballpoint Refills for Paper mate Lubriglide, Aspire, PhD,PhD Ultra Ballpoint Pens and Schneider pens that take Express 225, (Bulk Packed) (BLACK) : Office Products
SANFORD 4332431PP Paper Mate® Refill for Paper Mate® Aspire™, PhD™, PhD™ Ultra Ballpoint Pens, PhD, PhD Ultra Ballpoint, Fine, Black Ink, 2/Pack | Baumann Paper