bargaining counter BrE
bargaining chip AmE

Clearly, she felt her side now had a major bargaining chip.

But this was the only time I could use it as a bargaining chip.

Another bargaining chip: Consider getting multiple services from one company.

But what he has done is to create a valuable bargaining chip out of nothing.

He may also want to hold on to the land as a bargaining chip in negotiating other issues.

But now that we have a bargaining chip, they're going to go crazy.

"It's far too important a national security and economic issue to be used as a bargaining chip for other matters."

At least make use of them as a bargaining chip.

"We have what might be called their main bargaining chip."

Seems to me I can use it as a bargaining chip.