Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: It's a battery clip.

I bought this along with a breadboard starter kit. It works exactly as one would expect, but keep in mind that the wires are thin and may be difficult to insert into some breadboards, as they may simply bend rather than insert. Not too terrible of a problem for me, though I can't say it hasn't been annoying a few times.