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The concpet of "Flexible-Size Deep Socket" is one deep socket fits three of the most popular standard size of nut.
Considering the current usability of deep sockets, people need to purchase many deep sockets depending on the size of nuts. Moreover, even though the users are equipped with many standard deep sockets, they need to go through trial and error by putting deep sockets onto the nut several times to find which one fits.
With this in mind, I designed the flexible-Size deep socke which improves usability by eliminating the need to find a proper deep socket and screw/unscrew M8,M10,M12 standard size of nut by using one deep socket.
Seoul, South Korea