The PolarPro Extension Legs for the 3DR SOLO are perfect for raising the camera and gimbal up 1.5 inches keeping it safe during takeoffs and landings. The set includes 4 extensions which attach to the bottom of the 3DR solo legs. The Extension Legs are very easy to install and remove for traveling. The extensions also protect the SOLO from harsh impacts as they take a majority of the impact. These extensions are a great way to keep your camera and gimbal safe and away from dust and dirt.