"풀사이즈" 펜용 롤러볼/펠트 팁 카트리지 그립 섹션

I've been wanting to try Schmidt refills in my full-sized pen, and these grip sections make the swap effortless. The threads are machined perfectly, so it screws on tight with no wobble.

Finally, grip sections that let me use my favorite Schmidt rollerball refills in my full-sized pen. The conversion is simple and the threads are perfectly machined. It’s exactly what I needed to make this pen more versatile.