Zebra F-Refill Fits all: F-301, F-402, F-701 and  F-xMD pens. Ink is at the heart of our quality. Every product we carry undergoes vigorous quality assurance testing to guarantee writing performance. To maintain the standards you’ve come to expect, we offer a selection of refills to complement and extend the life of our most popular Zebra writing tools. F-Refill Fits all: F-301, F-402, F-701 and  F-xMD pens, Fine Point, Black, 2 Pack