Amazon.com : Pack of 6 - Schmidt 888 F Safety Ceramic Rollerball Refill Blue Ink Fine Tip : Office Products
Amazon.com : Lanier Comb Pack - Pack of 12 - Schmidt 888 F Safety Ceramic Rollerball Refills 6 Black Fine and 6 Blue Fine ink Fine Tip : Office Products
Schmidt 888 Safety Ceramic Rollerball Pen Ink Refill - 6 Pack of Black Ink Fine Tip Point (.6mm)