Crank Tobrazny ET1035 used to work with end heads having square drive 1/2 "Length knob -... 600 mm This is a great indicator for use with face heads This knob is used more often to work with freight cars Due to its length of loosening nuts. and screws create a very large lever effort that lets you quickly and without complications to unscrew the nuts and bolts Material -.. This chrome-vanadium steel tool steel characterized by high strength and durability udobsam. TVO of the driver is that the square is located on a movable joint. This allows, for example, working with the nuts and bolts at a certain angle to them, if you can not install the handle knob is strictly perpendicular to the bolt or nut. The handle marked notches, which prevents sliding of hands during operation.