For worn bolted connections which otherwise could only be opened with extreme difficulty, Problem-solver for vehicles and industrial purposes, Particularly suitable for brake lines, adjustment of track rods, etc., Especially suitable for brake lines, track rod adjustment, etc., Positive fit joint to the screw/nut is down to the special design of the plier jaw*, * Positive fit joints are not suddenly released. They need, in fact, to change their geometric form, a visible change in form quasi announces their failure.