The VMC Spy Snap UV Chartreuse is an innovative snap swivel with an integrated propeller that creates extra vibration and turbulence underwater, triggering predator fish more quickly. This set of 2 pieces, available in multiple sizes, is easy to attach and ideal for use with softbaits for maximum attraction and a striking presentation. The added turbulence can also deliberately influence the action of hardbaits, making this accessory perfect for situations where extra stimulation is needed to provoke strikes.