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Keyhole Spanner is a conceptual key. This design combines a key with a daily tool by means of the keys special shape, solving the problem of not bringing spanners with us when we need them in our daily life.
We may often come across some small accidents in our life. For instance, I would like to demolish a small nut in order to repair the bicycle parts, or something others. The development of modern manufacturing makes screws and nuts smaller, we cant handling by hand directly. Besides, we usually dont carry necessary tools with us all the time.
Chen Jian; Liu Zhen; Zhou Hai-lun