POWERBASS XL-SBCLAMP2POWERBASS XL SBCLAMP2 Soundbar Clamps When you want a secure fit for tearing up the roughest terrain with your Powersport vehicle or boat, these heavy duty clamps give you the versatility and confidence to fit your XL Series sound bar on most vehicles' roll bars. They are made out of non corrosive aluminum that is powder coated for extra protection against the elements to insure that your sound investment is secure and protected. ** ONLY WORKS WITH XL