Features & Benefits: Shake 'n Break Pneumatic Bolt Breakers attach to an air hammer to provide vibration while removing stubborn/frozen fasteners or torx bolts/nuts.; The other end of each Shake 'n Break has either a 1/2-inch or 3/8-inch square drive to be used with impact sockets.; The built-in hex (19 millimeter-3/4-inch) on the shaft of the tool is used in conjunction with an open-end wrench when loosening a stubborn fastener.; Applications include bearing removal and GM caliper removal.; Finished in black oxide for additional rust protection.; Set Includes: 37316- 1/2" Shake 'n Break Pneumatic Bolt Breaker 37315- 3/8" Shake 'n Break Pneumatic Bolt Breaker. ;
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