Aluminium Stretchers can be used like normal stretchers made of wood. They are made entirely of aluminum and have just a wooden insert on the back, which is there to sustain the staples. Depending on size the stretchers are possibly reinforced at the corners.
The main material is flameproof aluminum, and also the wooden insert is very difficult to ignite. This property makes the aluminum stretcher a perfect setting for hotels.
The prices for aluminum stretchers are reduced by 15%!