Design Custom 3D Gears for 3D Printing - Export as .STL file - Over 10 Custom Parameters for Gear Generation - Easy to Use and Easy to View - Gear Exports (.STL file) are immediately available for use by any 3D Slicer Program for all 3D Printers - Supports sharing to Files App, AirDrop, 3D model viewers, email, and many other applications chosen at export