New Tech Machinery Mach II Gutter Machines are designed to make aluminum coils into K-style functional gutters for commercial or residential use. NTM gutter machines are available in three options, Mach II 5”, Mach II 6”, and Mach II 5”-6” combo, which produce that size-width gutter. These machines are compatible with coil specifications: 30 - 24 gauge steel, 0.019 - 0.032 inches painted aluminum, or 16 - 20 oz. copper. Also available is the 7" Box Gutter Machine, which is recommended for creating gutters for large commercial buildings.