6 Pack - Private Reserve Ink Schmidt 888 Rollerball Refill Blue Medium Tip Medium Tip - Blue Ink - Standard size Safety ceramic tip roller ball refill by Schmidt. Schmidt 888 refill with plastic tube body, blue ink and a medium 0.7 mm ceramic ball tip. The safety technology features extened shelf-life characteristics and it is therefore particularly suited for use in pens without cap sealing. Schmidt 888 refills fit 98% of all Rollerball pens that accepts a standard size refill. 888 Safety Ceramic Rollingball Refill with plastic tube, stainless steeel tip with 0.7 mm ceramic ball. Refill Reads: Private Reserve Ink 888 M Ensure Top Quality - Buy Direct from Lanier Pens - Length: 4.33 inch (110.6mm), Diameter - .25 inch (6.3mm) Made in Germany by Schmidt - Distributed in the USA by Lanier Pens