ThisBatteryconnectorsaremadeofqualitycopperplating,withcorrosionresistance,goodelectricalconductivity,easywiringandstrongconnection;Plasticcoverisinsulationcover,whichisdust-proofandmoisture-proof,servingforalongtime Ittakesyouaboutonly5minutestocompletetheentirereplacementprocess,whatyouneedisawrenchandabatteryconnector,threadonterminalmakesitfasterandeasierforinstallation;Itisnotonly12Vbatteryterminals,butalsofor24Vand48V Carbatteryconnectorsaredesignedforuserswhousuallyreplacebatteries,theconnectorsallowquickdisassemblyforchargingandstorageofyourmarineorvehiclebatteries Onered(positive)andoneblack(negative)clamp,cableisfixedbyascrewclamp;Positiveelectrodediameter:approx.19mm/0.75inch;Negativeelectrodediameter:approx.17mm/0.67inch;Fits4to6gaugewires Batterycableendsarewidelyappliedforcar,vehicle,RVandboat,whichhaveastandardtoppostbattery