2-pack of RFA-67 6-volt batteries. Replacement batteries for PetSafe in-ground and wireless fence receiver collars and bark collars. For PetSafe Bark Control: PBC00-10677, PBC-302, PDBC-300, PUSB-300, PUSB-150-19, PBC19-10765, PDBC-300-20, and PBC23-10685. For PetSafe Remote Trainer: PDT00-10675,PDT24-10792, and PDT24-10793. For PetSafe In-Ground Fence: PIG00-10674, PIG00-10680, PRF-3004W, PRF-304W, PUL-250, PUL-275, PRF-3004W-20, PIG19-10761, PIG19-10764, PIG23-10681, and PIG23-10689. For PetSafe Wireless Containment: PIF-275-19, PIF-300, PIF-300-21, and PWF19-10762.