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Screw in screwdriver / screwdriver

Screw in screwdriver
Screw in screwdriver

Designed to highlight is that the screw can be
hidden in the driver inside, which not onlyWorks
more convenient,especially for high-altitude
operations.It increases security.But also improves
the efficiency and unnecessary trouble,what is more,
it can store aVolume of the screw for emergency

Design

Zhejiang University of Technology

Zhejiang University of Technology
hangzhou, China

He Jingjie Chenchen