Speedy Prop Balancer w/ Balancing Rod for DJI Phantoms 1,2 & 3, DJI 9450, 3DR Iris, 3DR Solo, Blade Chroma Minimizes Prop Vibration Improves Motor Life and Increases Efficiency Works with DJI Phantom 1,2 or 3; DJI 9450, 3DR Iris, 3DR Solo, or Blade Chroma Maximizes Image Quality Made in USA