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PUSH DRIVER / Screw driver


Easier and free driver; change of +driver and -driver. Not need to do more special work, just push into the hole and turn right the driver, now it's able to use as + driver. When push driver into the - hole, yellow part is pushed back and able to use as - driver from + driver.


Catholic University of Daegu

Catholic University of Daegu
Daegu, South Korea

An Gukjin,
Catholic University of Daegu