The caps doesn't have polarity, actually it is just plastic sleeving from some left over cable I had around, the caps leads have to be that long because otherwise the caps would't fit, some day I will change them for some auricaps or other boutique cap, but for now, dayton will do, the case is a hammond case from mouser, I went for a tight fit, but maybe you will like a little bit more of room to work, they come in several sizes and go for $15-$20 dollars, thanks for the comments.