This bundel from XProHeli features the large XPG Brushless Gimbal and the ProGrip Handle.
The XPG Brussless Gimbal is a motorized stabilization system for a GoPro HERO, HERO2, or HERO3 action camera. It is designed to help isolate the camera from vibration caused by the rotors to give you smooth aerial video and first-person view shots. It is suitable for larger multi-rotor RC aircraft such as the XProHeli XP2 using DJI Naza, Spektrum, or Futaba flight control systems.
Using the ProGrip Handle handgrip accessory featured in this bundle you can also use the XPG Brushless Gimbal as a standalone stabilizer for capturing skateboarding, snowboarding, and other types of action shots where handheld, freeform shooting is desired.