A worker adjusts a profiled aluminum rail to support a photovoltaic panel. Hand-tightening motion.

Frame Rate: 30, Resolution: 3840x2160, Video Encoding: H.264, File Size: 231.46MB, Number of Clips: 1, Total Clip(s) Length: 00:15

A worker adjusts a profiled aluminum rail to support a photovoltaic panel. Hand-tightening motion.

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