Maxmoral 2PCS Length 4.5cm SAE to SAE Polarity Reversal Adapter Suitable for Power Sports Marine Automotive Light Aircraft Applications

["SAE male-to-male polarity reversal adapter, SAE solar PV plug for quick-disconnect extension cables.","Simple to operate and install, simply plug into the SAE cable. Suitable for battery charging polarity reversal, battery testing, engine fault diagnosis, and SAE plug polarity reversal.","Made from high-quality PVC and tinned copper wire, ensuring good conductivity and durability.","Length: 4.5 cm/1.8 inches","These products have been developed specifically for the power sports, marine, automotive, light aircraft and industrial equipment sectors."]