[bangster]

They can be difficult with regular slip joint pliers, but I have never had to resort to getting specialty pliers, I am guessing you are looking for something like https://www.amazon.com/Professional-Removal-Installation-Ring-Type-Flat-Band/dp/B07RTQV4F1 I don't know what type of clamp you are dealing with, the flat with the tabs (one of which fits into a slot on the other and is captured open), or the wire type with a single point on one side, and a loop on the other.