Tungsten JackHammer Hard Bait - ShimmerMost surface lures use tiny ball bearings that tick. The Jackhammer uses a 2. 5 inch tungsten infused metal rod that fires through a tuned chamber. Every sharp twitch sends it smashing forward, rebounding, then slamming back through the body. The result is a brutal, lower frequency impact signal with up to 350% more decibel output than standard rattles. Blue and silver is the classic baitfish colour for saltwater predators. Ideal when sea bass push