Hauser 777 Ceramic Rollerball Pen Refill
Rollerball Refills Made by Hauser in Germany
Hauser 777F Ceramic Rollerball Pen Refill
Made in Germany, Hauser 777F is one of the premium rollerball refills on the market today. These will fit most rollerball pens that accept a standard "888" style refill. These also replace the 777SF refill.
These will not fit rollerball pens that take a proprietary refill like Cross, Pelikan, Parker and Montblanc to name a few.
Please compare your old refill to the picture and description to be sure these will fit your pen.