PRODUCT DESCRIPTION Rutland Products 16908 8-Inch Poly Chimney Cleaning Brush FROM THE MANUFACTURER Designed for removing coal and oil soot. The polypropylene filament is twisted in a heavy duty, 7 gauge spindle, with a 1 4-Inch pipe thread, plated, machined nipple, and a preformed 3 4-Inch loop on the opposite end. The .075-Inch crimped, black, polypropylene film.