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The traditional tools set are quite big and heavy which are not easy to carry. Yet missing parts or short of certain tools could be very annoying when you need to use. Screwdriver is a combination of different screw drivers in the form of Rainbow pen. It is small and easy to carry. Users only need to bring this Tools-pen and they are able to use multiple screw drivers at the same time. It is as easy as changing the color from a rainbow pen. The users can change to different pattern quickly.
The middle part of this tools-pen is transparent that exhibits the patterns and diameter of the screw drivers.
National Taiwan University of Science and Technology