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.
Once unscrewed from the wheel, you just remove the axle and the wheel pops out by itself. Closing the QR 15 is the same as for QR 9, by pushing the skewer toward the fork. If using a QR 15 axle, weight may increase by approximately 80 grams.