The Z-Man Rattle Snaker Tool and Rattle Kit allows for the easy insertion of glass rattles or tungsten weights into the bodies of ElaZtech® super plastics thanks to its stainless hollow needle and pushrod design. A built-in storage compartment in the handle of the tool allows for easy rattle storage. Z-Man Rattle Snaker Tool and Rattle Kit - Wghts/Floats And Leaders at Academy Sports