What is this?

[jkmfarmer]

Puller most likely, but (I think) it could also be a chain breaker. Although that would be one big chain....

 

[Engineer42]

It removes the orifice from inside of a Falange valve.

 

[Happy in NC]

All excellent possibilities for use

 

[jwmorris]

It is a puller of some sort, likely a condition where it can't get inside the part.

Or behind it.

So they clamp it by the OD.

 

[Tinhack]

It is a puller of some sort, likely a condition where it can't get inside the part.

View attachment 4121010

Or behind it.

View attachment 4121011

So they clamp it by the OD.

I have that Harbor Freight set. It actually works well.