Crank Tobrazny ET1024 used to work with the end heads having a square drive 3/4 "characteristic feature of knob Tobraznogo is its length and the length of the driver Material -.. 450 mm, the length is large enough to work with end heads Such a knob may be employed. for the repair of large machinery, agricultural machinery, where it is necessary to put more effort Material -.. This chrome-vanadium steel tool steel characterized by high strength and durability have. dobstvo with Tobraznym knob is in its pivoting head, which moves from one end of the driver to another. This facilitates fixing floating head in the center and circumference of the bar knob opportunities on both sides.