Pen Uno by Ensso
Updated: Jan 23, 2020
Pen Uno is a minimal pen designed to be both a pleasure to write with and beautiful to see. With only 5.3mm (7/32in) in diameter it is one of the slimmest pens ever manufactured, yet it is very comfortable to use because its holding barrel is slightly wider. This barrel also serves as a twisting cap that protects the pen tip when not in use. Pen Uno is precision-machined out of space-grade aluminum and anodized in five distinct colors: space grey, silver, gold, rose gold, and red.
The holding barrel doubles as twisting cap to protect the pen tip when not in use. A few turns of the cap will reveal the pen to be ready to write.
The pen consists of four main components: the main shaft, holding barrel, end cap, and ink cartridge (Hi-Tec-C Coleto). The end cap of the pen can be removed using a flat head screwdriver to change the ink cartridge. You can also use any other flat object or even your nail.
Pen Uno is designed to use the Hi-Tec-C Coleto gel ink cartridge which comes in a variety of colors. The cartridge is very slim because it was designed for a multi-color pen system. Hi-Tec-C Coleto cartridges come in 0.25, 0.3, 0.4, and 0.5mm pen tips (the same sizes as the standard Hi-Tec-C).