Product Description Duel Stretchback Grunt Call Change sound by extending rubber flex tube;Rubber tube for richer sound;Freeze free design
![GRUNT! 32oz Boat Cleaner - Removes Waterline Rust Stains [GBC32]](https://cdn11.bigcommerce.com/s-mepswkuetl/images/stencil/500x659/products/183763/151927/100039XL__33391.1729737138.jpg?c=1 "GRUNT! 32oz Boat Cleaner - Removes Waterline Rust Stains [GBC32]")