I’ve been trying to remember the name for a week. As soon as you mentioned “can’t recall” it was right there. Thanks.

Oettiker clamp.

One uses an Oettiker plier to tighten them.

http://www.installationpartssupply.com/category/oetiker-clamp.html

> On Aug 16, 2016, at 5:11 PM, Alistair Bell <albell@shaw.ca> wrote:
> 
> I have a pair of pliers that is designed to get those clips off. I'm sorry I can't recall the name of the clip type off hand, but it's surprising how well the pliers work.
> 
> Alistair