Reed's DS12B is a Pipe Descaler. It has a 3" - 12" capacity. It weighs 4. 2 lbs. This descaler comes with wide, tough scrapers that remove scale, dirt, and corrosion cleanly and quickly from the pipe surface, allowing more effective cutting, joining, gasket/valve seating, or other operations. It is faster and more effective than chisels, chains, or files and needs only 2" of clearance around the pipe. It can be used to clean pipe before cutting, water tapping, or drilling. It's roller handles allow smoother movement while in use, and it is classified a heavy-duty power transmission belting pipe descaler.