Du-Bro 189 Aileron Horn Wire Ball Links 2 Pack Change old strip aileron connectors to ball link control. Fitting also useful as dual take off connectors. INCLUDES: (2) horn wire ball links for 3/32" diameter wire (2) self threading nylon socket (2) threaded couplers 3/4" long with 3/8" 2-56 thread for up to .072 wire (2) 4-40 screws