Professional tool for commercial or occasional use Suitable to install bolts without shearing or damage Impacted for strength and durability Torque limiting tool so will not torque above a certain torque Max torque 100 Nm / 74 ft.-lbs 1/2" square drive so will fit any 1/2" drive ratchet / power bar / impact gun etc... SET Includes; 1 x 3/8" drive female adaptor (maximum torque 100 Nm / 74 ft.-lbs 1 x 1/2" drive female adaptor (maximum torque 100 Nm / 74 ft.-lbs 1 x 3/4" drive female adaptor (maximum torque 100 Nm / 74 ft.-lbs TLI Socket is a clutch constructed Torque limited Impact Socket The spring and clutch device will be limited to prevent the nut and stud from being damaged by over torqueing. The actual torque that these items will be lower so do not trust as an accurate reading, a torque wrench must always be used for accurate results Supplied in a blow molded case for easy storage and transportation