The DJI Landing Skid Leg for S1000 is part of the retractable landing gear assembly. The leg sits between the Retractable Module (Part 17 or Part 18) and the Landing Skid (Part 20). The landing gear are designed to keep the gimbal and camera assembly from touching the floor during takeoff and landing, as well as provided a stable platform while the S1000 is standing on the ground. In-flight, they fold up giving the camera an unobstructed 360° of shooting.
One leg and components in picture