Your search for "sheaffer skrip" revealed the following:
Sheaffer Purple Fountain Pen Refill (Pack of 5 Cartridges)
$ 7.00Sheaffer 5-pack fountain cartridge refill for all fountain and calligraphy pens. Purple Ink 5-pack Blister card (#96380) ...
Sheaffer Blue "T" Type Fine Point Ballpoint Pen Refill
$ 6.95Sheaffer standard (T type) ballpoint pen refill for the following ballpoint pens: Taranis Sagaris and Stylus.
Sheaffer Black "T" Type Medium Point Ballpoint Pen Refill
$ 6.95Sheaffer standard (T type) ballpoint pen refill for the following ballpoint pens: Taranis Sagaris and Stylus.
Sheaffer Black "K" Type Fine Point Ballpoint Pen Refill
$ 6.95Sheaffer standard (K type) ballpoint pen refill for Legacy Heritage Balance Intrigue Agio Agio Compact pens.
Sheaffer .7mm Pencil Erasers Type "D" Refill - Pack of 6
$ 4.19Sheaffer 6-pack eraser Type D refill for Sentinel 0.7mm pencil.