Rusty Hardware Solutions Kit - Loosen rust frozen nuts and bolts without damaging the hardware. First try Kroil, the penetrant used by 480 of the Fortune 500 companies. This remarkable penetrant seeps into spaces as small as one millionth of an inch. If needed, suppliment the action of this award winning penetrant with the included Left Hand Drill Bits. These 1/8in., 3/16in. and 1/4in. bits combine counterclockwise twist with heat to back out damaged bolts. Failing that the 5 Pc. Extractor Set will grip 1/4in. to 5/8in. fasteners.