Design the sliding groove for adjust the position to be work easily.
To push down the wishbone and other suspension parts, e.g. during
    the disassembly of the drive shaft , during replacing the gaiter or
     exchange of the wheel bearing. After loosening the ball joint the
    wishbone must in most cases be pushed down against the bush or
    stabilizer tension, in order to pull the joint from the support.
With this lever tool the work can comfortably and surely be
    accomplished by one person.