MDR Transducer Paint. A water based cuprous oxide, easy to use antifouling paint. Formulated especially to resist barnacles and marine growth in fresh or salt water. Improves depth sounder performance. Comes with a brush in the cap, making application easy on both transom and thru hull plastic or bronze transducers. Water base formula will not attack the transducer face. Easy clean up. Black. 2 fl. oz.