Radian Glider prop spinner and back plate. Printed on my Robo3D with PLA at 25% infill and 2 perimeters. This does not include the prop blades. Obviously, I've smashed my Radian and needed a new prop. The blades survived as the motor was off but the rest, not so much. I don't live near a hobby store, so I drafted these up in Inventor, printed it, and now have it running again. The spinner is a bit longer than the stock one but it seems to work well.