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.
1 Uncoiling a new rope: Hold it like it is a spool of rope and have a partner pull the rope from the spool stacking it in a random pile.  Coiling: Use a backpack or butterfly coil to avoid twists. To do so, stack the rope in the palm of your hand or behind your neck.