NFB 4.2 single-cable systems are suitable for most single-station boats with a single non-power-assisted outboard engine up to V-6 and minimal engine flutter or steering instability. ; Use dual cable system for boats with engine flutter or steering instability. Single Cable Kit contains 1- SH4910P No FeedBack Helm, 1- SB27150P 90 Degree Bezel Kit, 1- SSC62XX Steering Cable, Hardware and Instruction sheets. SSC61XX can be used as replacement cables.