Why it is included
The product listing notes: Solid and Durable Writer - Designed as a mini pen with a 10.5cm / 4.13 inches length, Aluminium Metal construction, comfortable grip section and only 12g / 0.42 oz capped weight for your consistent writing. This feature may be useful for fountain pen use; long-term durability has not been independently tested.
Listed features guide this comparison; longevity depends on use and maintenance.
