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Here I’ll review two of the most popular plate joiners on the market, the Porter Cable 557 and the DeWalt 682K. Before we even get into picking these tools apart, I’ll start by saying that both of these products are top notch and either of them will serve you well. The major differences are the placement of adjustment knobs and a few additional features found on the 557. These tools are both similarly sized, easy to use, and fully capable of handling whatever you throw there way.