Crank Tobrazny ET1022 used to work with the end heads having a square drive 1/2 "characteristic feature of knob Tobraznogo is its length and the manufacturing material of the driver length (300 mm) is the average value for operation with end heads Material -... Chrome vanadium steel . This tool steel characterized by high strength and durability. Ease with Tobraznym is reversible in its floating head, which moves from one end to the other of the driver. E to contribute to fixing floating head in the center and circumference of the bar knob opportunities on both sides.