This style wiper arm was originally fitted on Volvo XC60 models through mid 2011. Volvo later superseded all these earlier XC60 models to a different style. The arms are interchangable IF you also have the correct corresponding blade to match.
The easiest way to tell them apart is by looking at the arm. This is the earlier straight style arm. The later cars use a "bent" arm.
If your XC60 still uses this straight style arm this is a direct fit.