The Cotey Well Cleaning Brush is designed to agitate, surge and scrub simultaneously. It features interchangeable brushes that clean from 4- through 16-inch ID casing. The brush can be used in all types of water well casing, can attach to cable or pipe, and is self-cleaning. The "floating" brush design helps ensure free movement and virtually eliminates binding or "hanging up" inside the casing. Two models are available - the J200 Well Cleaning Tool, made for 4- to 6-inch casing, and the J400 Well Cleaning Tool, for 8- to 16-inch casing. Cotey Chemical Corp.