The OHTO Rays comes in six barrel colors and writes black in all of them. The flash dry gel ink dries down quickly, making it an excellent choice for left-handed writers or for highlighting. The needle point tip keeps the line fine at 0.5 mm and leaves the writing surface in view, which helps when you are working into a small box or along a ruled edge.
The top half of the body is silver metal, carrying the click mechanism and the clip. The lower barrel is plastic in whichever color you chose, and the whole pen is slim enough to ride in a planner pen loop rather than a pencil case. Refill it with the OHTO PG-105NP and the barrel you picked stays in rotation.