Ingersoll-Rand 232TGSL 1/2-Inch Super-Duty Air Impact Wrench Thunder Gun Distinctive appearance, similar to IR ThunderGun racing tool Adjustable power regulator The Ingersoll-Rand fastest 1/2-inch impact wrench available 625-feet-per-pound of maximum reverse torque; 550-feet-per-pound of forward torque Weighs 6-pounds