LITIO 2.0 is a sheet metal add-on for AutoCAD and GStarCAD, that calculates and draws the flat sheet development of ducts, rectangle-to-round transitions, cylinders, cones, pipe intersections, connections, bifurcations, elbows, etc. It is very easy to use and very versatile. It is ideal for the sheet metal-processing industry: for HVAC, hoppers, cyclones, dust extraction, ducts, conveying systems, silos, piping, etc.