Use to remove battery terminal clamp without damage to battery post. Will work even on corroded spring type clamps. T- handle center screw - for better grip. Constructed with high quality This battery terminal remover is made with quality and safety for a good performance. It's designed to make removal an easy process. Simple to use, loosen the clamp bolt, place jaws under each side of the battery cable clamp. Then tighten the center screw until the clamp is free. That's all it takes!