Abstract: A connector joins a fish line to a leader without the need of knotting the fish line. The fish line is passed through a cylindrical opening located at one end of a round shaft, then wound around several spiral grooves in the surface of the shaft, then passed through at least two lock holes which are approximately perpendicular to the cylindrical opening and are recessed so that the fish line does not protrude out when passing from one lock hole to another lock hole. A leader is secured to a leader opening at the other end of the shaft. A soft plastic tubing may be inserted into the cylindrical opening to prevent the weakening of the fish line while trolling.