11cm Ink Refills for Retractable Pens - 0.5mm Ballpoint Ink Replacement Cartridges $1.59 11cm Gel Ink Refill - Extra Large Capacity - Retractable Pen Ink $1.19 13cm Gel Ink Pen Refills - 0.5 or 0.38 mm $1.11 13cm Erasable Ink Pen Refills - Blue or Black Ink $1.12 7cm Ballpoint Pen Refill - 0.5mm Tip - Blue or Black Ink $1.19 8.2cm Ink Refill for Ballpoint Pen - Black or Blue Ink $1.19 14.3cm Ballpoint Ink Refill - Extended Length Ink Cartridge Replacement for Ballpoint Pens - 0.38mm Fine Tip $1.79