Wynn Supreme Heavy Duty Oarlocks are the original clamp on style oarlock and are by far the best made anywhere! Wynn oarlocks are made with heavy gauge steel and hardened bushings which, along with the unique "U" bracket construction provides strength and reliability that is unsurpassed. Wynn oarlocks are easy to install without drilling any holes and are adjustable to fit any oars from 1 inch to 1 3/4-inch diameter. Wynn oarlocks are available in three post sizes. Check the list below for the size that is right for your boat.