Made from stainless steel, these rig springs are corrosion resistant, reliable and recommended for use on most clipped rigs. They take up the tension when the hook is placed in the bait clip which eliminates the premature releasing of clipped snoods when casting. When you continue to cast clipped rigs, eventually the hook snoods stretch, and the hooks no longer sit inside the bait clips as well, springs take out this tension and eliminate hook snood stretch, which increases the effective longevity of the rig. Essential for cascade and loop style rigs.