for 32bit and 64bit OS.

Autodesk Inventor software is the foundation for digital prototyping.
The Inventor model is an accurate 3D digital prototype that enables
users to validate design and engineering data as they work, minimize
the need for physical prototypes, and reduce costly engineering changes
discovered after the design is sent to manufacturing. With innovative
approaches to accelerate and simplify the concept-to-manufacturing
process, Inventor has outsold all competitors for the sixth consecutive year.