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three in one wrench / wrench

three in one wrench

"Three in One Wrench" is an innovative self-adjusting wrench. It has a simple shape as a single open-end wrench, while it has various functions as adjustable wrenches. Owing to its unique structure of stackable jaws inside the wrench opening, "Three in One" can match three different sizes of screw nuts.

University

Zhejiang University

Zhejiang University
Ningbo, China

Tian Xia,
Zhejiang University

Leijing Zhou,
Zhejiang University

Yibin Zhang,
Zhejiang University

Li Ma,
Zhejiang University

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