This is the Fish Rattle Noise Maker for SpearfishingFeatures: Made out of polished stainless steel and filled with BBs to create a loud rattle Small and easy to carry along; simply tuck it in your wetsuit until you're ready to use it Attracts jacks, wahoo, grouper, yellowtail, cubera snapper, and amberjacks Use it by itself or pair it with flashers to enhance your tactics Works as an underwater communication tool while scuba diving Great way to attract the attention of a fish The Neptonics fish rattle is a great way to attract the attention of a fish; all you need to do is shake it underwater and it sounds similar to the noise made when you scrape rocks together to attract grouper. It attracts jacks, wahoo, grouper, yellowtail, and cubera snapper with the noise it produces. The fish rattle is made out of polished stainless steel with a chamber that is filled with BBs to create a loud rattle. It also works as an underwater communication tool while scuba diving. The fish rattle is small and easy to carry. Simply tuck it in your wetsuit until you're ready to use it. Use it by itself or pair it with flashers to enhance your tactics."