Equipped with sliding washers, the tool maintains a secure grip on the ductwork during use Make from metal, this duct stretcher ensures long terms The ergonomic offset handle provide enhances leverages and control while stretching ducts Duct Stretcher With its compacts 16inch size, this duct stretcher is easy to maneuver in tight spaces This 16inch metal duct stretcher tool is designed for expanding and shaping HVAC ductwork easily, Manufacturer: Kaeltsyn