Essential for anglers aiming to customize their fishing, the Z-Man Rattle-Snaker Tungsten SpikeZ are high-density tungsten weights designed for use with Z-Man's Rattle-Snaker tool. They're ideal for Elaztech Plastics and work well with other soft plastic materials. The weights' conical ribbed design ensures a secure fit, sliding easily into your bait and staying firmly in place. Many anglers appreciate the added sensitivity when leaving a portion of the weight exposed.