"No Hex Key?:" " C+ f# X5 i8 t( }9 s + @0 u* H5 N+ A. v# X% `9 `4 v1/2 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. 0 ^' D0 m2 K& y$ m4 I3 B