Evolve Tackle Leader Heli Bead System is designed to enable effective bead release, freeing the fish from the line and leader in all situations for enhanced fish safety. The sleeve and bead have two ring features that interlock in use, and how far onto the sleeve you place the bead dictates the release force of the bead. In this way the set-up can be arranged to achieve three different release forces, allowing you to better tune your rig to the size of weight being used and the fishing situation. This means in the event of a line breakage, the fish will be able to rid itself of the line as quickly as possible, with both small and large weight and lead usage. - Position 1 (top) is ideal for short range use and small sized weights and baits. - Position 2 (middle) is ideal for medium range use and medium sized weights and baits. - Position 3 (bottom) is ideal for long range use and large sized weights and baits. The sleeves are moulded in a custom compounded rubber for unparalleled grip on the line. They can be assembled on to the leader with a fine gated needle, and are moulded in the Evolve 'dark camo' colour for enhanced rig concealment. The beads are moulded in tungsten rubber to ensure the system slowly sinks. They have a large bore and are soft, so they can pass over knots and potential obstructions. Available in six per pack.