TransTEC Laser HD is a lightweight racing style quadcopter frame designed for the DJI Digital FPV System. It is suited for a 5-inch propeller power system and flight controllers. The frame is designed for a single stack of either 30x30 or 20x20mm, giving you the ability to use a wide range of flight stacks. The Air Unit is installed underneath the top plate with mounts for the optimal antenna angles When you need to make any repairs or modifications you simply need to remove the top plate (4 screws) to access your electronics.