"Stacker" - 6" Leader 4 1/4" in length Streamlined design won&';t snag on weeds or foul lines Greater range of release tensions "tension adjuster" doubles the holding power if needed Large, easy to handle shape The line release is the critical link between the downrigger and the fishing rod. If it does not perform properly you will lose both valuable fishing time and fish. The fishing lien is gripped between the soft pads with variable release tension attained by moving the line in or out of the jaws. The line release is attached to either the weight or the cable."tension adjuster" doubles the holding power.