Have you found out that the stock DJI Phantom landing gear is not tall enough to keep your camera gimbal off the ground? These landing gear extenders are installed between the main body and stock landing gear give you an additional 2cm of clearance. You will need M3-25mm or M3-20mm screws of which I purchased at www.rtlfasteners.com. One pair of the extenders have slots in them in case you are using a dual battery system. This slot allows you to put the battery lead wire through the extender.