Quad Lok-Up Halyard Line Lock w/BungeeRupp Lok-Ups are an innovative locking pulley system that locks your halyard lines, keeping your outrigger release clips right where you want them. 4 Locking Pulleys mounted side by side with 12 military grade bungee for Quad Rigging or adding a teaser.Robust design that includes the following: Spring loaded trigger for positive locking and unlocking. Modular design that is adaptable to various rigging setups. Accepts a wide array of halyard line material and thicknesses. Replaceable, serviceable locking components. Available in Single, Double and Triple systems. Military grade bungee cord with stainless steel hardware.