How will the CBAM tackle carbon leakage of finished or semi-finished products?

The CBAM applies mostly to basic materials and basic material goods, but also to some finished/downstream products, such as fasteners (CN code 7318 XX XX).

The CBAM Regulation will be reviewed at the end of the transitional period to assess, based on selected criteria, if additional goods and sectors within the ETS could be added.

Source: EC’s Questions and Answers on CBAM 

CBAM Regulation