These sturdy stainless steel clamps attach to Bazooka MT-8002B and MT-8002S Tubbie wakeboard speaker systems, allowing you to mount the speaker enclosures onto wakeboard tower bars. Marine-grade plating protects them from the elements. You can adjust these clamps to fit bars from 2-1/2" to 3". Two clamps are included in the package. Warranty: 30 days.