12X Schmidt 5888 F Safety Ceramic Rollerball Metal Refill Green/Red/Black/Blue Fine Tip - Walmart.com
Schmidt 888 Safety Ceramic Rollerball Refill, Black, Broad 1.0 mm
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