Lang 12 Piece Wheel Stud Installer Kit is designed for use installing button head wheel studs, the patented installer pulls the stud into the drive flange or hub without damaging the threads and assures correct installation of wheel studs. Lang 12 Piece Wheel Stud Installer Kit will not ruin studs or lug nuts, will install wheel studs on most major vehicle platforms including light trucks and SUVs, domestic and foreign. Includes installers, washer, spacer and corresponding rethreader dies.