Product Name Double sided copper with aluminum composite foil Material AL+PET+AL Thickness 0.04mm-0.1mm Width 4mm-1250mm Length Within5000m ID 53mm±0.5mm/76mm±0.5mm/152mm±0.5mm OD Within650mm Ps The appearance is very close to copper foil,but the price is very cheap http://www.jinshengtaifoil.com/