Those are cheap rectangular forks. They serve their purpose. These connectors have two offset screws that help secure the speaker wire. After the cable is attached, a color-coded plastic sleeve is snapped onto the end of the connector. This sleeve fits snugly and makes it easy to maintain correct polarity. These plugs are very tight when first installed and require a lot of force; The first use actually forces the tip to adjust to the size of the hole. After the first injection, the tip can be easily removed and reinserted. I used these rectangular banana plugs to replace some of the larger straight banana plugs. I also reduced the wire size. The end result is a cleaner look in my rack and easier cable management. Revain quickly sent replacements. In general, they are simple and workable. Low price.
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