"No Hex Key?:" + K8 s; H- `9 z5 p 5 E3 o. a# M" ^' l3 g1/2 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. 3 z9 r' {% z7 Z0 j' A! M$ e8 N1 J- A3 }2 Q- z! h& y* j& {7 \" o