"No Hex Key?:" . v* R. [# c8 A- y' f# {* ~% i7 t
1/2 3/8 1/4 inch rod couplings can be used in a pinch if you need a hex key or allen wrench. insert rod coupling into hex opening in lug set screw and turn with wrench. / | K, P+ v/ }" d2 `. s. z/ F7 }$ V! l4 k' R' g