When you have found the perfect multi-pen, you want to keep it writing forever. The Pilot Acroball Multi-Pen Refills allow you to replenish your favorite everyday-carry pens with Pilot’s exceptionally smooth, ultra-reliable Acro ink. Designed specifically to fit standard Pilot multi-pens—including the Acroball 3, Acroball 4, and the legendary Dr. Grip 4+1—these slender refills ensure your pen is always ready for intense note-taking, fast-paced meetings, or detailed calendar planning.

Available in both an extra-fine 0.5mm and a remarkably smooth 0.7mm tip size, these refills give you the power to customize your writing experience while reducing plastic waste.