Cotey Chemical Corporations patented Well Cleaning Brush is designed to clean all types of water well casing and screens.Its unique design allows it to simultaneously agitate, scrub and surge the well. The unit attaches to cable or pipe, has interchangeable brushes and is available in two models. The J200 Model cleans smaller casings while the J400 Model cleans larger diameter casings/screens.www.coteychemical.comkevin@coteychemical.com