Apr. 1, 2015. TDK Corporation has announced that its Hong Kong-based HDD head manufacturing wholly owned subsidiary, SAE Magnetics (H.K.) Ltd.
You use a wrench to screw, or unscrew a bolt. A screwdriver is for screws. Either way you turn it left. Some bolts have reverse threads and would turn the other way to unbolt.
Unscrew the pivot nut on the back of the sink's drain pipe, using an adjustable wrench. Line the horizontal arm up properly with the hole in the bottom of the stopper. Shine a flashlight into the hole, if necessary, as a guide.