Product description AutoDelo reinforced cross wrench keys are used for installation and removal of car wheels. The increased diameter of the rod and special steel inserts installed at the welding point of the rods improve the strength characteristics of the keys and extend their service life. - Made of chrome-vanadium steel using hot stamping method (forging on hammers). - Have a standard hexagonal working profile and a 1/2" transition. - The rods are welded using contact welding method and reinforced with steel riveted inserts. - Protected from corrosion by a synthetic polymer coating.