Ball diameter on Montblanc Rollerball (Best size for signatures)

[Reluctantly]

The information on Montblanc's website is very confusing and seems to suggest the Broad refill on LeGrand is 1mm but the Broad on the Classique is 1.4mm. I understand that the Broad was only available for the LeGrand. From the website:



"Refill Rollerball" and "Refill Fineliner": suit the Meisterstück Classique , Starwalker, Bohème, Muses Editions, Montblanc M, Great Characters, Limited Editions.



F stands for Fine, ball diameter 0,5 mm
M stands for Medium, ball diameter 1,0 mm
B stands for Broad, ball diameter 1,4 mm


"Refill Rollerball LeGrand" and "Refill Fineliner LeGrand": suit the Meisterstück LeGrand Rollerball.



F stands for Fine, ball diameter 0,6 mm (Rollerball only)
M stands for Medium, ball diameter 0,7 mm (Rollerball only)
B stands for Broad, ball diameter 1,0 mm (Rollerball only)
Fineliner EF stands for Extra Fine, diameter of felt tip 0,55 mm
M stands for Medium, diameter of felt tip 0,8 mm
B stand for Broad, diameter of felt tip 1,0 mm






Can someone confirm what the ball diameter is on the LeGrand refills? I assume the info on the Montblanc website is wrong and that the Broad on the LeGrand refill is not the same as the Medium on the Classique!

[Reluctantly]

I have a Meisterstuck classique that I use for notes, I use a medium-size refill for that. I was interested in getting a LeGrand Meisterstuck for signatures and for that I want a broader line than the one I'm used to on my classique. If the LeGrand broad is the same as the classique medium then that's not wide enough.