{HEAD ~ A screw feeder tube} provides for the introduction of a screw into {TAIL ~ 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 the introduction of a screw into { TAIL ~ 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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