These pens were sent to me by Anja from Papier und Stift – thank you!

Ballpoint
Measurements
Length (uncapped): 110.2 mm/4.34”
Diameter (section): 7.11 – 10.6 mm/0.28 – 0.42”
Diameter (barrel): 9.9 – 10.6 mm/0.39 – 0.42”
Weight (all): 34.5 g

Rollerball
Measurements
Length (uncapped): 114.1 mm/4.49”
Diameter (section): 6.80 – 10.6 mm/0.27 – 0.42”
Diameter (barrel): 11.4/0.45” (uniform)
Weight (all): 17.0 g