These spreaders are designed to prevent trolling tangles by separating the rigged lure, from the weight. The rigged lure connects to the spreaders long arm with a three to four inch leader. The weight is then hung from the short arm using an eighteen inch leader, while the mainline attaches to the swivel at the juncture.Long Lengths: Short: 1-3/4" Long: 3-1/4" Prevents trolling tangles Seperates the rigged lure from the weight Connects to 3-4&'; leader 2 Pack