landing-gear is part of:

landing-gear contains:

Full expansion for landing-gear:
   100%  2x2 1-Wheel Landing Gear Axle
   100%  2x2 2-Wheel Landing Gear Axle (Front)
   100%  2x2 2-Wheel Landing Gear Axle (Side)
   100%  2x2 Landing Gear Axle in Tri-Set