Need part number

A friend from New York City says:
Hi. Can you identify this piece? These guys came and took it off my door...two pieces...and never returned to to the repair. I just need to buy the part and someone here will install them.

Can you help?

Please and thanks!
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Emily from SWISCO responded:

Hi there!

Start by taking a look at our 81-051 and 81-052 rollers. Carefully look over the dimensions for each and compare them to your original hardware to see if one of these match what you need.

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