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