WOVTE Hook Clip Connector, Grey Fishing Line to Hook Clip Connector Swivels - 30 Pack Made of High Quality material. Total length: approx 3.7cm Ring handle features unique design in order to reduce water resistance when yielding water and also improve the sensitivity of the group Flexible rotation, not easy to wind around the fishing line; high tensile strength The way they function is by turning directly in to the fish's mouth when the hook is set Great Gift for your friends!