This is a used battery charger cable for GR-8, GR-1, GR-8B. It was tested working but is missing the cover and screws. You could use the ones from your old cable.
SEALED MIDTRONICS A129 CHARGE ENGINE OUTPUT CABLE W/CLAMPS FOR GR8 CHARGER USA
Midtronics Charge Engine Output Cable for GR8 Chargers with Clamps (A129)
Midtronics A129 GR8 Charge Engine Output Replacement Cable
Midtronics GR8 GR-8B Charge Engine Tested Working!
Midtronics Charge Engine Output Cable
Duracell 804-0157 12V Rapid Charge FLA Battery Charger Charge Rate 2,8,15 AMP