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 (.0000”) and select the matching part number on the Imperial or Metric pages.
Rudder Collars may be ordered online.