These are prop guards for KipK's brocopter. http://www.thingiverse.com/thing:413639 It's too cold and windy to fly outside and I'm new to multirotors, so to keep from trashing props and everything in my living room, I printed these out and bolted them on. The front guards are two pieces so they wrap around the landing gear. The rear one just bolts straight on. If you don't have the landing gear on your brocopter, just print the rear mount for them all. The rear motor mount would probably work with other 1806 motors too.