Features. Battery Bolt For Top Post Batteries. Replaces Nut On Cable Connector Bolt. Keeps Ring Terminals Away From Corrosion At Battery Terminal.. Dimension - 0.5 x 3.5 x 4.5 in.. Item weight - 0.1 lbs. California Prop 65 - Warning, This product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm.