Assembled Product Length: 8" Assembled Product Width: 8" Diameter: 8" . Quality brush made with tough, durable polypropylene bristles Can be used in stainless steel chimneys Designed for cleaning off and removing fine particle formations and soot from flues and chimneys burning coal or oil Stiff polypropylene bristles are resistant to chemicals and corrosion and are most effective in removing soot with a firm wiping action Round polypropylene bristles are twisted in a heavy- gauge spindle with a 3/8" pipe thread connector on one end and a heavy-duty loop at the other 8"