Tides Marine Rudder Collars are for use on power boats. Machined from 304 stainless steel, each unit comes with two threaded locking screws. A third "indexed hole" (which is not threaded) is machined into each Rudder Collar and may be used as a guide to drill "dimples" in the rudder stock. Simply measure your rudder stock diameter (.000”) and select the matching part number.

The unit is a lightweight, two-piece, filled-nylon housing which is affixed to the rudder stock between the Tides RPB and the upper rudder bearing. Each unit comes with a lip seal and red installation hat.