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Jon Pope Heavy duty construction and clamps. really works well.
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Rafael I got his device to hold a vacuum hose next to a workpiece as I drill or cut it in my workshop. It works like a charm. The clamps are very strong and the gooseneck has the perfect rigidity to hold things solidly in place. The quality seems very high. I have only had it for a short time, so I don't know yet how it stands to repeated use.