Red Black 4mm Banana Male Female to Female Plug copper Connector Socket Audio Speaker adapter extension Insulated plug Coupler

Red Black 4mm Banana Male Female to Female Plug copper Connector Socket Audio Speaker adapter extension Insulated plug Coupler 4 types for choose

no.1：4mm Banana male Gold plated

no.2：4mm Banana male Nickel plated

no.3：4mm Banana Female socket copper

no.4：4mm banana female to female

package：1 pair for choose