Description The Cross Classic ballpoint refill in Black with a Medium point must be screwed in to firmly fit in the mechanism, and is compatible with most Cross ballpoint pens except the Click, Cross X, Edge and Tech3+. Cross ink that is archival means the inks have a pH level that is neutral and acid-free and have been formulated to resist fading over time. From the end of the refill barrel to the tip of the point, this refill measures 116mm or 4.56" We offer Free Shipping on all orders over $59 for US customers, and for orders over $250 for our Canadian customers.