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± SCREW DRIVER / Screw driver

± SCREW DRIVER
± SCREW DRIVER

Easy to use Brand new Multi screw driver,
Pop up Different type of Screw driver in Another one
± SCREW DRIVER is Simpler, smaller, safer.

University

Yeongnam University

Yeongnam University
Deagu, South Korea

HyungJu Do,
Yeongnam University

Kyeonghun Park,
Yeongnam University