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What this kind of screwdriver are mostly different from the past screwdriver is the former don't need to repeat the operaton of lift up and turn around the screwdriver.For example,bicycle's flywheel can fasten and loose screw only go there and back.Taking advantage of people's unaware behavious,hands will put preesure naturally when screwdriver are fastened, hands will decrease the preesure on screwdriver.Making people don't need to taking its operation mode and circular motion into consideration.Rebates screwdriver not only has a simple and easy structure and is easy to process,but also making users easier to tear down.
Chunming-Zhang Piaopiao-Hao Yajun-Liu