All the sizes are available as your requirements, Maximum OD, 1500mm or 43 inches; Maximum Thicknesses, 40mm or 1.5 inches Product Advantage: Big sizes and Thicknesses are available;Die-pressed helical plate with a perfect helical configuration for an angle;Its helical surface is normal to the axis or shaft, which contributes to a successful installation;Materials: Carbon Steel; Low alloy steel; ...