Do these mount at factory roof points or do I need to drill holes?

These attach directly at factory mounting points—no drilling required. Your roof already has the attachment hardware in place.

Will I need brackets or adapters to install these?

Installation method not specified in product data. Before committing to fasteners or adhesive, test-fit to confirm your roof attachment style and hardware compatibility.

Can I use these bars immediately or do they need finishing?

Black finish comes ready to mount—no paint or prep work needed. Wipe down with a clean cloth before installation if desired.