Type: Stackable Type 4mm Banana Plug Solder ideal for a variety of tasks, including do-it-yourself projects and electrical testing. Solder is used for the connection (max cable outer diameter 4mm). Current rating: 20A 1000V (V) of voltage Features: AC/DC interface type; flame retardant/flame retardant Material for the insulator: PA sheath Composition: Copper Body PE is the insulator. Application of Nickel Plating to the Surface Voltage of Current: 20A/1000V Mode of connection: welding One female-to-female banana plug is included in the kit.