As can be seen in the picture, the shaft of these adapters is quite long. I had to trim mine (a cutter wheel will do if you have a Dremel) to fit my amp, but I can think of an application that would require the extra length. Fits perfectly on my 4AWG wire and the extra sleeve to cover the insulator makes the finished product very pretty. I would suggest covering the + side with some sort of insulator (a few turns of tape will do).
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