Big-T Helm | SeaStar SH5000P SeaStar Big-T Helm | SH5000P Heavy-duty mechanical rotary steering helm works with Teleflex or Seastar Solutions SSC61XX steering cables. Single cable Big-T rotary steering helm Heavy duty helm for single engine sterndrive and inboard applications up to 34 ft. For use in single station or dual station applications 3 turns (lock-to-lock) of the steering wheel equal total extension of cable Standard 3/4 in. tapered steering shaft Accepts steering wheels up to 20" in diameter For use with Teleflex and Seastar Solutions SSC61XX cables for single station applications Large thread-on nut secures steering cable to the helm Conical plastic nut holds spent travel tube Meets A.B.Y.C. and N.M.M.A. standards and certifications Made in the USA