This wonderful refill expands your options if you have a rollerball pen that takes the Schmidt 888/5888 family of refils. The cushioned fiber tip point gives you a distinctive line that only a felt-tip pen can provide. For those who like Sharpies and other fiber tip pens, this is your refill. This will fit many pens made by Bexley, Aurora, Itoya, Laban, Taccia, Tsunami and dozens of others. E-mail us about compatibility.