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When we need to tighten loose screws, we don't always have screwdrivers by our side. "Easy Screw" provides two opposite twist bars that can be pushed out. We can use the twist bars to tighten "Easy Screw" easily without a screwdriver. And we still can use normal flat screwdrivers to tighten it because of its slotted shape.
Shih Chien University
Taipei, Taiwan
Kuei-Yuan Chen,
Shih Chien University