The FPV Control Sticks are designed to control the movements of the aircraft. They are completely detachable for storage or replacement. Simply rotate the control sticks and attach them onto the remote controller when in use, then put them in the dedicated groove when the mobile device clamps are unfolded for storage.FeaturesDetachableInverted throttle stick option - Change from pull to push by adjusting option within goggles settings.SpecificationsLength: 18.7mmWidth: 8.3Includes1x FPV Control Stick (Set of 2)