Mayhew 37315 Pro 3/8 In. Shake ‘n Break Pneumatic Bolt Breaker. Other end of each Shake ‘n Break has either a 1/2″ or 3/8″ square drive to be used with impact sockets. Built in hex (19mm-3/4″) on shaft of tool to be used in conjunction with open-end wrench when loosening stubborn fastener.

Mayhew 37315 Pro 3/8 In. Shake ‘n Break Pneumatic Bolt Breaker. Other end of each Shake ‘n Break has either a 1/2″ or 3/8″ square drive to be used with impact sockets. Built in hex (19mm-3/4″) on shaft of tool to be used in conjunction with open-end wrench when loosening stubborn fastener.