This 8 piece set includes the following sizes: M10x1.5, M12x1.25, M12x1.5, M14x1.5, M14x2.0, M16x1.5, M16x2.0 and M24x1.5 Used for breaking free steering knuckle/suspension joints using an impact hammer Nut must be threaded all the way onto knuckle/suspension joints threaded shafts Also can be used to remove Honda, Lexus and Toyota Wheel Studs(as long as it has useable threads) Prevents damaging threads or ripping a boot