This pen was kindly sent to me by Xezo and can be purchased through Amazon.

Measurements
Length (capped): 141.7 mm/5.58″
Length (uncapped): 126.3 mm/4.97″
Length (posted): 165.4/6.51”
Diameter (section): 9.7 – 11.7 mm/0.38″ – 0.46″
Diameter (barrel): 11.0 – 14.6 mm/0.43″ – .57”
Weight (all): 61 g
Weight (cap): 37 g
Weight (body): 24 g