Would You Be Able To Use This On A Tri-copter Is Are The Blades To Big And If So 3D Printer Models

Free STL files of would you be able to use this on a Tri-copter is are the blades to big And if so for 3D printing. 3axis.co have 1 would you be able to use this on a Tri-copter is are the blades to big And if so 3D Printer Models STL files for free to download..