X525 quadcopter - 10 cm detachable leg

10 cm high, detachable leg for X525 quadcopter.
I used the original hardware to install.
The base stays on the quad when leg detached.

This is a part of my X525 project:


APM 2.6 case w. damper
Middle accessory plate
Battery tray with low voltage alarm case
Mobius cam, board camera tilt camera mount