3 and 4 Terminal. Fits all your needs. 3 terminal for metal frame ground systems, 4 terminal has insulated ground terminal for use with fiberglass or other non-conductive materials.
Cadmium plated, non-breakable heavy duty housing. Resists rust, gives long life in most any environment.
Includes terminal nuts and lock-washers. Nothing else to look for or buy, saves time and money.
Isolates starting battery. Assures primary battery power for starting engine and provides secondary battery current for auxiliary power.
Full time charging of both batteries. Gives you early re-use of secondary battery.
