Century rudder used in the Mid 1980's on Coronado and Arabians with the rudder port with a grease (zirk) fitting
1" diameter shaft
The tiller arm (not included) bolt which tightens the arm to the rudder shaft also acts as the shaft key
REQUIRES A COTTER KEY HOLE TO BE DRILLED AT THE TOP - HOLE LOCATIONS VARY AND WILL NEED TO BE DONE BY BUYER AFTER PURCHASE