SeaStar SH4920P NFB 4.2 Dual Rotary Steering Helm This 4.2 No Feedback NFB rotary helm is for use with dual cable outboard applications. This steering helm is suitable for most single station boats with a non power assisted outboard or sterndrive engine up to V6. The standard 34 tapered steering shafts accepts wheels up to 16 in diameter. It is recommended to use dual cable systems in boats with engine flutter or steering instability. This SeaStar steering helm replaces Safe-T steering systems w