The Wivco Shake-N-Break, No. TH28.000, removes rusted, corroded, painted or otherwise stuck fasteners. It is used in conjunction with a standard air hammer at low pressure, utilizing the vibrations from the repeated blows to break the rust loose. This allows the screw to be turned out using the included handle. The kit includes four different sized Phillips bits and will hold any standard 5/16" interchangeable bit, including hex and Torx. This tool has many automotive application, loosening stuck fasteners in places like wheel openings, headlight doors, taillight lens, bumpers, striker pins, seatbelt bolts, floor pans, motorcycle engines and others.