Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Battery Disconnect

The item appears to be brass, but is really aluminum that is anodized a brass color. The crimp between the two isolated parts is poor so that they flop apart when the knob is loosened, requiring a few turns of the knob to be sure it does not contact. The end that is like a battery post is smaller diameter than a negative battery post, so the battery clamp has to be tightened to an excessively small size to hold properly.