ER20 Torque Adapter

This ER20 Torque Adapter is designed to work with standard "A" style hex nuts as well as the "M" or "mini" style nuts.  Two torque wrenches for the price of one.  
 
Made from 1/4" thick 304 tainless steel.
3/8" Drive.
 
When installed 90 degrees to the torque wrench, no adjustment to the torque setting is required.  If the adapter is installed in a way that lengthens or shortens the effective length of the torque wrench, you must calculate a corrected torque setting.  The torque adapter length is 1.5 inches from the center of the square drive to the center of the nut.
 
Here's a link to a website with instructions on how to calculate a corrected torque setting for your wrench:  Link