Got the old Schmidt 888 rollerball refill? Got a Waterford rollerball pen or a Sheaffer that takes the slim rollerball refill? Got an Aurora rollerball? How about a Ferrari, or a Visconti? It's a great extra to add to corporate rollerball gifts. This Monteverde rollerball refill has gotcha covered, with a fine, medium or broad point and ten different colors. Measure your old refill and if it is about 4-3/8" (111 mm) and the basic shape is the same, join the crowds of customers who have made this our number one selling rollerball refill.