The Strutter Socket is used on strut to install a 1/2" bolt for maximum strength. The shear strength of a 3/8" bolt is 4900 lbs. The shear strength of a 1/2" bolt is 8700 lbs. You don't have to add extra washers when installing the 1/2" bolt in the strut. Also, the 1/2" bolt fills the slot in the strut much tighter than the 3/8" bolt. The Strutter Socket can be turned sideways, put into the strut, then slid over to the 1/2" bolt and tightened up. Before, you could only install the 3/8" bolt, but now, for heavy loads and maximum strength, use The Strutter Socket to nail it down. Torque bolts to manufacturer's specs. To remove the hang tab cut the plastic tabs at the base and twist the hang tab.