"No Hex Key?:" n) B% G% @! P4 p2 N ) p* H7 X* T, ], P8 {0 o1 ~4 _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. ( f9 Z, q, k d8 ^. B1 A2 \0 Y