"No Hex Key?:" + Y8 P) D( L+ i _* l( W " n6 a. o' g9 [8 e \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. . U' Z/ ]4 B( w# Z2 ~6 j# p