Astromech droids had a lot of uses though Cobb was fairly certain the torch wasn't for actually shaping metal. Or any analysis of metal.

"You sure he wasn't talkin' about beskar?" Cobb clearly enunciated the word just to make sure the man heard correctly. "It's a rare metal. Only comes from one place in the galaxy."

And this was before the Mandalorian homeworld was glassed according to Din so Cobb was pretty sure it was still tightly controlled by the Mandalorians. It would be something for a street vendor to get a piece.

"And that's styled close to what I know beskar is made into. But, don't know, got a feeling. You mind if I take a look?" he asked, holding out a hand with his most charming grin in place. "If I run off your droid there can scorch me."