Product Description Reinforced Cross Balloon Keys AUTODELO are used for installing and removing car wheels. The increased diameter of the rod and special steel overlays installed at the welding point enhance the strength characteristics of the keys and extend their service life. - Made of chrome-vanadium steel using hot stamping (forging on hammers). - Have a standard hexagonal working profile with a transition to 1/2". - Rods are welded using contact welding and reinforced with steel riveted overlays. - Protected from corrosion by a synthetic polymer coating.