The Pen Container / Case by Japanese design studio Claustrum in 'Concrete Matte' finish.

High Strength Stainless Steel.
Fits ± 5 Pens.
Opens with one-hand operation.
Each piece is unique.
Made in Japan.

Size: 162*64*18mm

Weight: 110gr

Curious how it works?
https://youtu.be/loE22RKl1z8