... width(mm): 200 300 to 1000Material thickness(mm): 0.5-4.5mm, 1.0-6.0mm Material inner diameter(mm): 450-530Material outer ... of the machine: L x W x H(m): 5x1.9x2.5, 5x2.0x2.5, 5x2.1x2.5, 5x2.2x2.5, 5x2.3x2.5, 5x2.4x2.5 ... operating life.2.Special designed for straightening wide range of material thickness from 0.5-6.0cm, saving space and easy operation.3 ...