The Super Collision Damage Waiver (SCDW) insurance reduces the excess on the vehicle (included). To see the self-risk amount go to the Collision Damage Waiver (CDW) in the Terms.
Included (no extra cost) with all your rentals are these insurances:
Super Collision Damage Waiver (SCDW) – Collision Damage Waiver (CDW) – Gravel Protection (GP) – Theft Protection (TP) and Sand & Ash Damage Waiver (SADW).