The Helix Snap is designed to keep a soft plastic lure securely in place during repeated casts, retrieves, and tugs on the rig. The spring anchors itself into the lure material to limit slippage and loss during the cast. This connection maintains mobility around the hook, which helps the lure work more freely than with an overly rigid attachment. The shorter sizes are best suited for compact setups, while the longer springs provide more support for bulkier soft baits. The right choice depends mainly on the acceptable bulk and the desired hold within the lure material.