Battery Terminal Covers - Red/Black - 5/8 These Battery Terminal Covers are designed to insulate integral marine wing nut terminals protecting battery cables from corrosion and shorting. Constructed of injection molded PVC. These covers satisfy USCG and ABYC requirements for the prevention of accidental grounding of battery terminals. Color coded to avoid polarity misidentification. Will fit most marine batteries as well as automotive batteries using add on marine terminals. WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.