Now available from Genius Tools are their Torque Extension bar sets. Features include:
1/2"-drive impact extensions rated 380 to 420 ft.-lbs., 3/4"-drive impact extensions rated at 750-ft.-lbs., and 1"-drive extensions rated at 1,500 ft.-lbs.
These extensions help prevent over-torquing wheel nuts and minimize wheel distortion. Genius states that the extensions are accurate to within 4 percent.
The tool's design also allows the length and diameter of the torque extension shaft to flex with each blow of the impact wrench once the specified torque is reached.