Cheerson CX-10 Landing Gear
This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/3mDJefv3JB1
This landing gear is designed to fit the Cheerson CX-10 or Cheerson CX-10A as far as I know. Just in case it would fit others, the hole in the center (where it attaches to the bottom battery compartment) is 15 x 17mm.