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Screwdriver Little Helper / Screwdriver Little Helper

Screwdriver Little Helper

When when we screw screw screw down, swaying and twisting crooked nail problems, the fixed screws through the plastic sleeve is designed to solve these problems, both of the screws of various sizes.

University

Chengdu University of Technology

Chengdu University of Technology
Chengdu , China

yizhi zhang,
Chengdu University of Technology