Boat Hook Silicone Squeegee Heavy duty silicone blade provides a wide (12") coverage area to easily clean and clear any type of window or marine surface. Comfort grip allows for manual use or attach to any Sea-DogA(R) boat hook and all universal threaded devices. Universal/Acme ThreadWARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.