The Uni-ball UMR-85E is the gel ink refill found in the Uni-ball Signo 307. It is the 0.5 mm version of the UMR-87E.
Prior to the release of the Signo 207 Plus+ in August 2020, the Signo 307 was the only pen that used the UMR-8*E family of inks. The 307 is sold in a 0.5 mm and 0.7 mm size. The 207 Plus+ was only released in 0.7 mm, but it will presumable be outfitted with the UMR-85E when a 0.5 mm pen is sold in this new line.
Uni-ball UMR-85E Gel Pen Refill Information
|Street Price||Check Price|
|Pen Type||Rollerball / Gel|
|Ink Colors||Blue, Black, Red|
|Max Body Width||5.9 mm|
|Refill Length (cm)||11.2 cm|
|Refill Standard||Pilot G2|