What ballpoint ink refill is this? Sanrio
September 16, 2017 5:27 PM Subscribe
Dear pen and ink experts: I'm trying to find a refill for a ballpoint pen and am having no luck. All I know is that it's definitely not a D1; the pen is by Sanrio, made in Japan, probably '90s. The refill shaft is smooth with no nubs or anything and looks very generic. It attaches to some kind of base and the entire length of the refill is covered by a spring. Photo attached- about 62mm in length, plastic.