The Fuel Can Stabilizer provides steadiness when using your system on uneven surfaces. Stores inside the vessel along with the rest of your system. Compatible with all systems except Joule. WARNING: This product can expose you to chemicals including Benzene, which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov Provides steadiness when using your system on uneven surfaces Stores inside the vessel along with the rest of your system Compatible with all systems except Joule