Bolt Breaker Attaches to air hammer to provide vibration while removing stubborn/frozen fasteners or torx bolts/nuts Other end of each Bolt Breaker 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 Applications include bearing removal and GM caliper removal Made in the USA Showing all 2 results Default sorting Sort by popularity Sort by latest Sort by price: low to high Sort by price: high to low 37315 – 3/8″ PNEU. BOLT BREAKER Read more 37316 – 1/2″ PNEU. BOLT BREAKER Read more