"No Hex Key?:" # }3 d/ a* Q! M" U3 Z7 R 4 ]) ^5 c7 P7 m+ D+ N- _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. / ^) p- _' H7 V' |- l2 C8 {0 |$ M- Y" w8 l, H# j