as a tool to tighten and loosen the screw head split size and shape of a screwdriver is designed so that it is in accordance with the conditions of use, such as a screwdriver to be used for the work was a gem (Jeweler Screw s'.with a screwdriver in the use of heavy mechanical engineer will design, Stem Leaves in the shape of a square the square to allow the use of congested or tongs to handle tighten up the twist of a screwdriver,
more than ever.
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