This pen was kindly sent to me by Wuben. Get yours here, with a 20% discount code: S20TP

Measurements
Length (writing mode): 152.7 mm/6.01”
Diameter (section): 9.0 – 10.4 mm/0.35 – 0.41”
Diameter (barrel): 11.5 – 12.8 mm/0.45 – 0.51”
Weight (all): 31.5 g