Let’s compare two pens with the same cool filling system by the same brand. The Koloro was sent to me by Pen Chalet; the Demonstrator was sent to me by Goldspot – thanks a lot! You can check out the full reviews of these pens, if you like: Opus88 Koloro and Opus88 Koloro Demonstrator.
This pen was kindly sent to me by Goldspot – thank you!
Length (capped): 147.3 mm/5.80″
Length (uncapped): 136.6 mm/5.38″
Length (posted): N/A
Diameter (section): 11.1 – 12.9 mm/0.44″ – 0.51″
Diameter (barrel): 14.2 – 15.0 mm/0.56″ – 0.59″
Weight (all): 30 g
Weight (cap): 10 g
Weight (body): 20 g