Boat Hook Three Sided Bristle Brush - Soft Bristle These three-sided bristle brushes fit all Sea-Dog® boat hooks and all universal threaded devices. Soft bristles are scratch resistant for gelcoat, paint and plastic windows. Side bristles make it easy to clean in hard to reach places. 10-1/2” head is longer than industry standard covering a larger cleaning area. Universal/Acme Thread Warning [https://productimageserver.com/prop65/6pt.png]WARNING: 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 [http://P65Warnings.ca.gov].