Add property information to a virtual component such as part number and description. 
- Right-click a virtual component in the browser, and then click iProperties. 
  
- In the iProperties dialog box, enter the component properties. 
  
Note:  
  - A volume and mass can be entered for virtual components. When a virtual component has a volume and mass, the moments of inertia, surface area, and center of gravity of an assembly using virtual components can be inaccurate. Possible reasons are: 
	 
- The location of virtual component cannot be defined other than the origin of the assembly. 
	 
- The surface area and moments of inertia of virtual components do not exist.