This refill is a popular 0.7 mm ballpoint-style pen refill. It’s a modern ballpoint refill that writes smoothly, but it’s still considered a ballpoint.
This refill is used in cheap pens, thin pens, and multi-pens sold by Uni, Uni-ball, and Mitsubishi Pencil Co. Ltd., most prominently the Uni Boxy 100.
Uni S-7S Ballpoint Multi-pen Refill Information
|Street Price||Check Price|
|Ink Colors||Blue, Black, Red|
|Max Body Width||3.0 mm|
|Refill Length (cm)||8.8 cm|