Libram of Valliance ICD

Can i ask if there is an internal cooldown for this libram and how many seconds. thanks

I guess warmane uses the same value mentioned here:
https://www.wowhead.com/item=47661/libram-of-valiance (comment section)

"The buff has a 70% proc chance and 6 second ICD"

6sec ICD, 70% proc rate.

edit:i git got