Our 8D Add-On Battery Terminal is designed specifically to fit the East Penn 8D battery, it will not fit other applications. This is the ideal product when needing to convert top post SAE 8D battery to fit side connections. Each product includes 6 zinc-plated steel attachment screws and a 3/8\" - 16 stud terminal (3/4\" length). The terminal should be tightened to 4-6 ft-lbs.