; R4 U0 j( i, R2 ]5 W* Q. _- t8 @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. 1 Z9 h( F( C( ^) s) a9 _5 u$ l" K) C; _' }1 t; w