{HEAD ~ A screw feeder tube} provides for {TAIL ~ the introduction} of a screw into the screw gun extension, and the screw gun is compressed downwardly and operated to drive the screw through the plate positioned thereunder 
{ HEAD ~ A screw feeder tube } provides for { TAIL ~ the introduction } of a screw into the screw gun extension , and the screw gun is compressed downwardly and operated to drive the screw through the plate positioned thereunder
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