Cortosis staffs were a type of staff constructed from cortosis, a substance known for its ability to deflect the energy blades of a lightsaber. These staffs had a price of 2,500 credits.
The initial reference to cortosis staffs within Star Wars canon occurred in Gadgets and Gear. This was a supplementary resource for roleplaying purposes, specifically for the Star Wars Roleplaying game series, and it was released by Fantasy Flight Games in 2019.