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.
Look for a threaded rod with an adjustment nut at the point where the lower rod connects to the upper one. You can adjust the length of the linkage by turning the nut clockwise -- to shorten it -- or counterclockwise with pliers. If the nut is stuck, hold the rod steady with a second pair of pliers while you turn it. Lengthen the rod if your tub doesn't have a stopper and it isn't holding water.