Heavy Duty Air Impact Wrench Durable twin hammer impact mechanism. Pressure-feed lubrication Heavy Duty Air Impact Wrench*Durable twin hammer impact mechanism. Pressure-feed ... Saw Blades, Cold Pressed Sintered Diamond Saw Blades, Core Drill Bits, Cup Wheels, crack chaser and tuck point blade, ... your exact need. AT-265 3/4" heavy duty air impact wrench (twin hammer)Suqare:3/4"Capacity Bolt Size: ...