What are these clamps?

[JonathanJung]

I've seen two different styles of these used for joints that can't accept normal clamps, but I don't know what they're called.
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[Scott in San Diego]

Pinch dogs or pinch clamps.

 

[JonathanJung]

Pinch dogs or pinch clamps.

Thanks! When I searched for pinch clamps initially, all that came up were hose clamps.